Steam blocking on niddy noddys.

Spinning singles, winding them on to a niddy noddy, and steam blocking them with a tea kettle on the niddy noddy works. Those hanks/skeins can be leased and stored, or packed off to the dyer. It is very low capital, and there are 10,000 yards of singles in the gray bin that prove that it works for singles intended for weaving.

However, a skeiner or yarn blocker with a steamer is faster.