Hey, that's a thought. Or how about some sew-on patches of the SolarCoin logo? I got some done for my 'space mission' last summer. Work out at about £3 each. Any profits could go to SolarAid again.
I'll check with sunnyboy over on slack to see what the use-permissions are for the SolarCoin logo.. wouldn't want to upset the Foundation.
RE: SolarCoin rises 22% and Stable