Once you are done with the container, simply place it back exactly as you found it for the next explorer to discover.
Geocaches come in all shapes, sizes, and types — and some may be more cleverly deceptive than you can even imagine. Cache owners will always include a log book for you to sign to record your successful find. Larger containers might also include some treasures to be traded or moved to other cache locations — like with trackable tags, personal keepsakes, and the occasional geocoin hoping to be passed on to the next adventurer. Once you are done with the container, simply place it back exactly as you found it for the next explorer to discover.