For example you might make yourself a small charm of some sort and focus energy into it to help you break an old habit. You'll then place the charm somewhere where it will remind you of your decision to break the habit. If you reach a goal you might decide to destroy the charm as a way of releasing the energy. Another use for charms is as a keepsake of a ritual or holiday. You can include the making of charms in some of your Sabbat celebrations, and the charm retains some of the magic of the celebration.
Different things can work as charms.
A charm could be a small cloth ball filled with herbs and other magic items. Or it could be made of thread, tied or knotted with different beads or stones. Or it could be made of paper, with different symbols and patterns. Homemade dreamcatchers can also work as charms and can be easily made with yarn and a metal ring - both of which are available at most craft stores. You can charge charms different ways.