There's also these at 64mm width... which would look like skinny fenders on large wheels: https://www.ridepdw.com/goods/fenders/sodapop-fenders
And I've just found this, which looks like it would be a great rear fender for a fixed gear bike that has zero means of attaching anything: https://www.ridepdw.com/goods/fenders/excalibur-fender . Doesn't work for you though.
@Velocio started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
There's also these at 64mm width... which would look like skinny fenders on large wheels: https://www.ridepdw.com/goods/fenders/sodapop-fenders
And I've just found this, which looks like it would be a great rear fender for a fixed gear bike that has zero means of attaching anything: https://www.ridepdw.com/goods/fenders/excalibur-fender . Doesn't work for you though.