I have been experimenting with a few solutions.

OBG's idea of using the multi-chambered containers with the days of the week on each compartment(which can be relabeled) was one.

Another is the small key chain with a metal capsule bottle with a screw on lid with a rubber gasket. They come in various sizes. Check your large Pharmacies, Wal-marts, K-marts, & Auto parts stores(where they sell key chains.) Online, EDC Depot carries small containers that are similar.

Hope this helps you,

Tim Bauer