Are you throwing a UFO, space or alien kids party?  Or perhaps you are planning an alien theme for Halloween? It’s such a fun theme and with some mega-blockbuster alien movies coming out this summer it’s definitely proving to be timeless.

Today I’m going to show you how to make this alien specimen prop using a fantastic alien bust from Oriental Trading and complete with gooey alien slime!  It makes a fantastic impact and it’s an eye catching centerpiece for your “Area 51” dessert table.

You can see how I used it to decorate my UFO Spotting & backyard camping party HERE. Let’s get started.

I did NOT receive compensation for this post. I did receive some free products to review.  All project ideas and any opinions expressed here are my own.  For further information on our disclosure policy please check out our disclosure page.

What You’ll Need (specimen):

  • Roswell Alien Bust
  • Large see through container (minimum 12” wide and 14” tall)
  • Black & Yellow hazard tape
  • Bio-hazard decals
  • Clear tubing
  • Clear stick (if the container is higher than 14″)
  • Scissors

What You’ll Need (slime):

  • Equal parts:
    • Clear glue
    • Water
    • Liquid starch
  • Green food coloring
  • Optional glitter & sequins
  • Bucket
  • Stirrer

Step 1: Wrap the Container

The container will be holding slime, so, the sturdier the better, try a vase or a clear storage bin.

I’m always looking for bits of useful scrap, would you believe I actually found this bin when I was dropping off my dog at boarding! The owner was closing her retail store and this dog treat bin was going to the dump.  I snatched it up to re-purpose for this prop.

Here in San Francisco you can try Scrap SF, a local donation funded source of clean and reusable scrap.  Your city may have something similar, teachers are a great resource for finding these unique spots!  Make sure anything you use is clean and dry.

Then wrap the top, bottom and open edges of the “specimen container” with hazard tape.  You can also add bio-hazard symbols or words like “Area 51”.  See how I created mine on my Cricut HERE (*coming soon).

Step 2: Make the slime

I made a large volume of slime so used a bucket.   Make sure the container you use is the right size for the amount you plan to make.

The key to this recipe is equal portions.  For example:

  • 1/4 cup of water
  • 1/4 cup of  glue
  • 1/4 cup of liquid starch

will make a great volume for your child to play with.  I used a mix of 65oz/2000ml of each to get the volume for this specimen prop.

First you pour all of the the glue into the bucket, then pour in all of the water and stir them together.  Next add the green food coloring (to your preference in color) and any glitter or sequins.

Last add the liquid starch and stir it in.  It takes a little longer to turn into a good gooey slime at this volume but not to long.  Once your done pour it into the container.  You can choose to pour it over the alien head, it won’t damage it, it cleans off well.

Step 3: Add the alien bust

Add the bust, you can also do this first and pour the slime over the bust.  The bust is made of foam so will float.  You can either leave it floating on top (flotation depends on the size of the container you have) or you can secure it so that it sits upright.

My container was tall & wide so to prevent the head tipping forward I used a plastic thermometer inserted it into the top of the aliens head (using scissors to make the hole).  This reached the top of the container where I was able to secure it by resting it on the edge of the entrance point.  (Tip: You could also tape it in place or use fishing wire around the neck securing the head to weights).

BONUS DECOR:  If you are having an evening party try adding some glow sticks or LED lights into the slime.  This will light up the transparent green slime with a creepy glow!

Step 4: Add clear tubing or piping

Once you have your alien head and slime in your decorated container you can have a little more fun with the kids.  I added some clear tubing coming out of the specimen container as if the DNA was being extracted from the alien!

BONUS DECOR:  Put a science beaker at the other end of the tube with extra slime!

You now have a fabulous accent to your out of this world UFO spotting party!  Looking for more DIY ideas for a UFO hunting party? try HERE for a keepsake invitation.

Make sure to check out my UFO Spotting & backyard camping party for even more party inspiration! Happy Partying! Nat xx