Place the rice milk powder, maple syrup, nut or seed butter, cinnamon, oil or cocoa butter, and salt (if using) in a bowl, and whisk to combine. Once nice and creamy, stir in the oats, and any add-ins you would like (optional).
Roll the dough into approximately 16 little bites. You can leave them as balls, or flatten them a little into cookie shapes.
Chill for 15 minutes to firm up, and enjoy whenever hunger strikes. These bites store well in the refrigerator for a week, or you can freeze them. They taste great at room temperature or straight from the refrigerator or freezer.