I hate leftovers!

Ask my husband and he will tell you I hate leftovers. I will not eat anything over 1 day old. I guess the same is true when it comes to yarn. What do I do with leftovers?

I have started the Amazing Technicolor Blanket with worsted weight scraps but now that I am knitting socks, I have a whole new realm of scraps piling up. If I knit 3 strands of sock yarn together will I get the a worsted weight? Every leftover I have is a striped or varigated yarn so there isn't much I can do by combining them. Any suggestions?