I've bought a set of extension tubes to play with. Found our youngest to be more cooperative than the cat for a trial run and enjoyed a quick experiment with a new point of view. Did get a shot of the cat's whiskers, which is kind of appropriate for a fun new toy!
Great shot! My first macro gear was extension tubes and still use them. I did buy a used macro lens later on but don't regret buying the tubes! Good light is very important with macro.