Finding a creative outlet is more to do with personal desire than to do with outcome. I play drums 3-4 hours a day and those hours go by in what feels like one. I ended up buying an electronic kit so that I could play without irritating neighbours, and set up metronomes/click tracks/music tracks easily and hassle free. I can do exercises in 7/8, 11/4, whatever.
I've often had the urge to try other things, but I think that you really need to find something you love to do. I don't know how to express what I feel when I play drums, but it's like a feeling of complete clarity, where nothing else matters and you're expressing yourself through the rhythms you create.
I don't think this is a feeling exclusive to drumming or music. Any activity that engages your imagination and creative side could do this. Basically, I don't think that the people who are musicians and just want to be involved in and play music set out to create anything specific or to have 'X' amount of talent.
They do what they do, because it's what they want to do. For me the feeling is almost like I'm not even playing it, I'm just the physical extension of my inner self.
But to be honest, it wasn't always like this. I think there is a period of time where you're learning an instrument that can be incredibly frustrating. Where you can't really play the things that you sound out in your head.
I personally had trouble practicing, but I decided that I was going to play for at least 1 hour solid every day. I found that I could do this. I didn't have to play anything, I just experimented with this drum and that. After a few months I realised I was getting pretty good. It was at this point I started doing exercises, because I'd now developed a natural feel for the instrument, I wanted to do exercises to improve my technical skill to expand my ability to improvise even further.
Essentially I just want to be able to play whatever it is that comes into my head. Be it a 7/8 poly-rhythm, or a syncopated 4/4 rock beat. I don't care if no one else knows that I played it or came up with it, I just want to know that I have the ability to play what is in my head in a recognizable fashion and that I have the capability.
I don't know if this can help you choose a creative outlet of your own. I guess what I'm trying to say is that sometimes your creative outlet is not always as apparent as you think it would be. You really need to dedicate yourself to something regularly to gain some deeper understanding of it, and only then will you know if you want to pursue it further.
If you only scratch the surface of things, it's going to be hard to glean some sort of creative insight and to really develop it as an outlet. I hate structure and practice exercises, so I learnt by improvising every day. The real key was just that I played every day and eventually developed some skill and started to see the endless possibilities that having more technical ability would bring.
Jimi Hendrix learnt guitar just by screwing around on it every day. Most drummers just bang pots and pans as kids and while they're young they don't really practice.
Try some stuff out, just do it for the sake of it for a while. Eventually you'll start to see the connections and the possibilities and if it's something you like, you'll take it further naturally.
Whew. Wall of text. Don't know if it helped any, but good luck finding your own creative passion regardless
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