I try to devote my afternoons to making music in my home studio but it's a lot more fun hanging out with musicians and friends and trying subtly to influence a band than making your own stuff.
If you start to disrespect the character you're playing or play it too much for laughs that can work for a sketch it will sell some gags but it's all technique. It's like watching a juggler - you can be impressed by it but it's not going to touch you in any way.