Just got my etrex GPS a week ago for my 40th Birthday. I have yet to place, but have 17 finds in 2 days of caching. Seen several nice ideas. wide mouth peanut butter jars, the plastic ones. Coffee creamer jugs with camo tape, pvc with a screw on lid and spring clamp to put it in a tree. almost anythig will work. You can paint it up, or put tape on. Make sure you follow the instructions at geocaching,com . They explain what you need. We have traded playing cards, matchbox cars. different medallions that we have had. Al sorts of stuff will work. Take the kids along if you have any. They will have a blast.