When we built our house we didn't have kids (and thought we wouldn't) so one spare bedroom was the office and the other spare bedroom was my craft room. 3 years later we adopted - twice! - and there went the spare bedrooms! We moved my buddy's office into the bonus room's alcove / dormer area (there's a pool table occupying the rest of the bonus room), and I was using whatever space I could find for my sewing and crafts (usually the kitchen table). I have since moved things around in our master bedroom and was able to configure a dedicated sewing area. It's cosy, but works great!