Halloween Lab Theme (Bar Decor)

Set up a Halloween Bar with Science Lab theme for a festive adult party. Get all the bar ideas, a free printable bar sign, snacks, and decorations to serve your “spirits” of choice. You’ll love these Halloween party ideas to serve your cocktails in style.

Halloween bar with science lab themed bottles.

Halloween Theme for Adults

Setting up a Halloween party bar opens the door to so many possibilities. There are lots of ways to turn your “spirits” into ‘magic potions‘, ‘poisons‘, and ‘tonics.‘ And coming up with puns and creative names is half the fun!

I’ve always loved science lab themed decor for Halloween parties. And you can purchase all the fun lab supplies right from your computer so there’s no excuse not to create a Halloween bar with a science lab theme.

Halloween party table with black and white stripe table cloth and science lab themed bottles and decor.

Science Lab Party Decorations

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Here’s the science lab decor you’re going to need to create this Halloween bar. And once you have it you can use it year after year!

Halloween party table with black and white stripe table cloth and science lab themed bottles and decor.


The black and white striped fabric gives this decor a more modern look. It’s interesting how one simple tweak can change a design into a modern, rustic, or whimsical look.

Create a rustic, abandoned lab theme by using burlap or spooky Halloween fabric for the base. Lean old empty frames against the wall and it will look completely different.

For a Gothic-glam look, cover the table in black lace and black or silver ornate frames. The possibilities for creating your Halloween bar are endless.

science lab beakers serving cocktail mixers for Halloween theme party.

Keep drinks simple by offering a signature punch and a single liquor. Our friends love vodka so that’s what I choose, plus it’s just so versatile.

You can mix up a variety of cocktails using vodka as a base. Provide mixers like tomato juice, apple liqueur, pineapple juice, olive juice, and blue Curacao.

This allows guests to mix up a dirty martini, a bloody Mary, or a variety of sweeter drinks. Pour the mixers into an array of science lab vessels: a flat bottom boiling flask, a large beaker, a graduated cylinder, and a volumetric flask .

Bottles dressed up for Halloween with spooky labels.

I made a punch mixture of cranberry juice, orange juice, and lychee juice. Guests can use it as a mixer or drink it on its own.

I decanted the vodka into a flip top bottle, and poured the punch into a carafe. Just add Halloween themed labels to dress them up.

For the blue Curacao I added a syringe to the large flask so it can be filled and squirted into the drink, just for fun!

test tube shots served in black wire holder, surrounded by Halloween decorations.

A Halloween party bar wouldn’t be complete without a round of shooters. A grouping of test tubes placed in a wire rack is a terrific way to display those.

PARTY TIP: Spray paint the rack black to coordinate with the rest of the decorations.

Halloween bar with science lab themed bottles.
lychee fruit stuffed with red grapes to look like eyeballs for Halloween party.

Garnish drinks with olives, onions, and floating eyeballs, aka ‘worm warts’, ‘slugs’, and ‘monster eyeballs.’

For the eyeballs, simply stuff canned whole lychees with a grape, dark cherry or blueberry.

bar table set up with Halloween decor and mini flasks to hold drinks.

Use small flasks as glasses to drink from. Accent the table with an old chandelier or candelabra sitting on its side.

skull under a glass dome with insect attached to the side for Halloween.

To round out the table decoration with science books, skulls, and insects.

tiny appetizer plate with spinach dip, blue cheese, and bread, with plastic bug on the side.
pasta salad served in mini science beakers.

Small round dipping plates mimic the look of petri dishes. The “petri dishes” hold “mold” in the form of blue cheese and spinach dip.

Mini sized beakers are used to hold “brain specimens” aka pasta salad, and small cocktail forks are tucked inside.

Party Food Ideas

Add some delicious appetizers to the bar so guests can balance out their cocktails with Halloween themed food.

FREE printable Halloween bar sign

Halloween Bar sign 

  • The finishing touch for this science theme bar is a printable bar sign. I knew I wanted to incorporate a bar sign that used the periodic table of elements somehow. And what’s more clever than using the symbols to spell out the word “bar”!  Using “B” for boron and “Ar” for argon, I printed out some simple sheets that I hung using these mini spring clips.  I think it looks very modern and sleek. You can use the spring clips over and over again, and they won’t damage your walls.

Download your FREE printable bar sign here.

  • To add just a little more interest to the area I hung a mini bunting made from washi tape and bakers twine. I used banner anchors to hang it and I love how they’re clear so they’re unobtrusive to the eye.

More Halloween Party Ideas

So, what do you think? Are you hosting an adult Halloween party this year? If so I hope you can use some of these Halloween bar ideas.

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  1. Stomach certainly a little woozy from some of those details there, Chris, but that just means you did a really fabulous job with your theme. 🙂 I personally couldn’t do an event without command strips, either! They’re a godsend!

  2. This is freaking AWESOME!! I LOVE all the details and was swooning all the way! 🙂
    Thanks for the tips on the brand!! What I’ve always wanted for my parties!! Hope to find it here! 😉

  3. I love this one Chris! My boys would be over the moon with all the creepy ideas! 🙂

  4. I use 3M Command products ALL THE TIME in party styling and they are in my Event Planning Toolkit I take on all my events! It was just a matter of time before they created a line dedicated to party decor! BRAVO! And you used them brilliantly Chris!

  5. Looks great Chris! I just bought the balloon holder Command hangers and I can’t wait to try them out!

  6. Chris, I CAN’T live without command products in my home love them. Love all the details of your party thanks for continually inspiring me your work is just amazing.

    1. Thank you Brittany. Is it wrong that I love my own idea? LOL I just love that they are so casually placed…almost like a clipboard 😉

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