One simple gift idea also for small children to make is to twist an easy keyring from yarn. Only little bit of material is needed.
First put the yarns through the ring. Then start to twist the yarn from both ends. When there's enough twist (you can feel the yarns get tighter) make sure the ring is in the middle of it. Then fold the twisted yarn and hold the ends all the time. Let the key hang free so the yarn will get double twisted (both ends get twisted around each others). Make a knot at the end so the keyring is finished.