Try recycling. I use old footwear as a source of leather for such things as strops. I have an old worn-out, leaky pair of rigger boots and some leather moccasins which I have partially cannibalised and they work fine. Getting furry linings off can be a bit of a nuisance and you have to keep your paws out of the way when cutting the stitching but, hey, they were free. I am thinking also of an old leather belt wrapped and glued around a ply or MDF wheel for a rotary polisher or honing wheel.
Would that be a possible way forward for you?
K