Throw what you have in a bowl and name it something silly.
Here is what we used:
mini marshmallows (ghost poop)
chocolate chips (witch warts)
candy corn ( goblin teeth)
cinnamon toast chrunch (mummy scabs)
I got this idea from http://www.sandytoesandpopsicles.com/celebrate/halloween/halloween-boo-mix-free-halloween-printable/