first up, wrap wool around your fingers:
then once there's a fair bit of wool on there, stop, and tie loosely in the middle :
next, slip the lot off your hand and pull your knot tight, and then double/triple knot it in place:
now you just treat it like you would a normal pom pom - cut around the edge and then even it out with scissors:
of course, once you have your pom pom, then you have to decide what to do with it. i opted for bugs (planning stuff for my next group of home-school kids), which turned out to be super easy! just glue googly eyes to something furry and it looks like a cute animal thing : ) add more pom poms, felt etc to be more specific in terms of animal...