Have you looked at your thread stash lately?  How is it being stored?  Do you remember what the heck that spool was for? 

How about a Purge the Stash event at an NELG meeting?

Several of my knitting and crochet groups do a "purge the stash" at meetings.  It allows other members to try out a type of thread without having to buy an entire skein, trade threads, and it get's those small ones out of your place.  Whatever is left is donated to a Senior Center and preschools for craft projects.  Great part now  - you have room for something new!

Image courtsey -FreeDigitalPhoto.net- Wool by Dino DeLuca