I confess — I just love ziploc bags. Today I re-bagged my Puerto Rico, inspired by a post to rec.games.board I saw. Now I have 55 colonists in one bag and a 4-player bag and a 5-player bag. Both have 20 colonists, one Prospector, a ship (7 and 8) and victory points (20 and 22). So, if I play with three — no changes. If I play with four, I add one bag and if I play with five, I add both bags.
This adds some extra trouble when putting the game away, but I think it saves enough time when setting up the game (after all, I want to get to play soon) to be worth it.
I also put all the extra colonists and the blank building to another bag and hid that bag under the plastic tray. Out of sight, out of mind. I also switched some bags to smaller ones, so everything would be as tight as possible. Then I found a new home for thusly spared larger bags — I had my Africa tiles in two smaller bags, now I could put them all in one, larger bag.
I bought a bag of 100 (I think) small ziploc bags — I used them all, now I’m going through my second bag. I just love them, can’t help it. I hate to see bits and pieces floating around the box, or all bits and pieces in one, large bag. All the trouble sorting the pieces, that’s so frustrating.