I took the shells (and a couple worry stones) and divided them into various piles. Small, medium, and large.
Most of the shells were small. So, I purchased a bunch of small, plastic jeweler’s pouches. Geocaching is interesting in that what I was creating are technically called hitch hikers. The trackable itself is the item on which the secret code is printed. These were sheet of paper I printed, laminated, and used square punches to then cut out. The shell (or worry stone) is the hitch hiker.
A hitch hiker is typically something a little more substantial to reduce the risk of the trackable getting lost. The hitch hiker is then attached to the trackable by some means. For example, a small action figure might be connected to a coin trackable by way of a keychain. The action figure is the hitch hiker and the coin is the trackable. As long as the trackable remains in the game, it doesn’t really matter what happens to the hitch hiker. The token is the real valuable piece. For my purposes, the shell is the hitch hiker, the printed and laminated square is the trackable, and the container is the means of attachment.
All the shells were put into a plastic bag. Medium shells were then placed into a slightly larger (more robust) container. Large shells were placed in small chests I found at a hobby shop.
As supporters donated funds I used bright pink post-its to denote the ones that had been claimed. Further, as the trackables were claimed, I customized their descriptions. If I knew the person well, then the description is something I believed matched their personality or a message they would appreciate.