Let's have a Spooky Halloween Slime Party! Here are some of our favorite Halloween craft supplies and decorations for your slime making party. I found black cauldrons in all sizes. I used mini cauldrons to hold all the different add-ins for the kids to put in their slime. Here's the rundown of what we added to our homemade glitter slime to make it super spooky! Halloween Slime Add-in Ideas: Colorful Pom PomsHalloween ...