I am a hobbyist. It seems like all I do is hobbies, so it's a fair bet I have something in common with you!
I spend a lot of time reading and listening to music, a fair amount of time watching television, anime and playing video games, and a small amount of time writing, drawing, crocheting, sewing, and cosplaying.
I collect lots of things: figures, music boxes, manga, and ball-jointed dolls. I also like taking pictures of the things I collect.
Small warning: I *am* a fujoshi - meaning I like boys' love/yaoi stuff. I'm pretty mild about it, but just so you know....
I keep a blog and various tumblrs!