How about an actual spool?
You can use a left over 3d filament spool, old fishing rod parts, wire spool, auto winch parts from the junk yard, plumbing parts. I have even seen lathed down wooden 4x4..
So many spools and spool simulants
Try the hardware store, they might have something they can donate
Now when you get a spool the trick is .... interfacing it with your motor/transmission.
Good luck this season.
Aloha!