The wheels I had built for the RSW were from a Raleigh Max kids bike, I got from a charity shop for £6.

there single speed though. I had got another kids bike from the dump with mangled 16" wheels that had 20 spokes and a 3 speed hub. I cant remember what it was called. It was white with a square shifter that had a lever and a button on it. Those are rubbish. I put the shifter on my blue Falcon. It stopped working when going to town. I smashed it off the bars. :/
I had got another donnor bike from the charity shop. It was also £6. It was a dual suspension Y frame. I still have the wheels from it. The bike frame was in my big fire. I rebuilt the front wheel last night while watching the TV. It had anodising on it. So sanded the brake tracks smooth. And polished up the other parts with a brillo wire wool pad in soapy water. Looks nice. Was thinking I could build a Dynohub or drum brake hub into the other rim. I still have a few 40 spoke rear hubs. Not tried to build mismatched rims and hubs. Ive heard that SA brought out the S3B small diameter drum brake for small wheels. Well Ive got a couple of them from RSWs. But there 28 spoke, and my alloys are 20. As for getting a better spoke line with a smaller hub. Well Ive had RSWs with full size drum brakes and dyno front hubs.