I recently bought a huge husky brand toolbox from Lowe's for $12... I know it seems pretty basic, but it works awesome for all those small pieces like poppets, o-rings, hydrometers, and whirlfloc tabs. It's actually big enough to keep a bag of DME in there for starters, etc.
I plan on using it as my dedicated brew-box....I should have everything I need in one place, no trips in and out of the house.