Skip-stop
I scrounged a 135mm fixed/fixed hub that had one defect on it; it was drilled for 48 holes but all of the 650b rims I’ve got are 32 hole. Not an insurmountable defect; I simply laced it up skip-stop (cross, skip a hole, cross, skip a hole, etc…) and left 8 empty spoke holes on each side.
If I was ambitious, I would have scrounged a 16" rim and laced it in so that it floated in the space between the spokes. But I am not; I simply laced it, trued it, destressed it, and took it out on a ride (with an amazing chorus of pings and pops in the first 1000 feet as it finished destressing itself – I’ll probably pull and retrue the wheelset after the next 100+k ride on the thing.)