Go outside of your house or tent and look for a stick or something that can serve as one. It can be a piece of metal or wood or plastic but for this drill take the first that is able to serve as a stick. Find a place or return to were you learn and work on doing the same drills you do with a stick while using this found stick while adapting to the edges, dirt, strange shape and so on of what you have with you now. Simply find what you can learn with what you have with you at the moment.

Have fun.