Was out shopping yesterday and noticed that may of this year’s costumes & masks had a lot of craft furs in many colors and nail polishes that would be suitable for painting poppers or for head cement. For those who use craft furs in their tying, post Halloween sales are an opportunity to stock up. There are probably many other items which could probably be useful but the craft furs sort of “jumped out” at me.
Craft stores are full of tying materials. From storage boxes to craft furs for streamers…eyes and glues, yarn for bodies and craft strings. The list grows. 
Ralph didn’t mention the wide choice of craft foams available at craft stores and wallyworld. Also check in the dried flower section, sometimes you can find peacock and pheasant feathers and biots used for room d?cor.