Picked up an old road frame + some extras a week or two ago and created a hideous beater bike that is super chill to ride. It is as minimum as it can be (no brakes no gears nothing). It has a 26" coaster brake wheel on the back and a 27" road wheel on the front and some riser bars (essentially a cruiser with road bike geometry), and it almost has barspin clearance. I intentionally wanted it to look as awful is possible so that it would be even less likely for someone to steal my $80 bike.
In other news, I saved myself from spending a lot of money on another bike that would've most likely just ended up with me injuring my wrist again (which happened yesterday when I took a gnarly fall skating, anyways).