How about adding a medium sized 3x3 soul forge to what a carpenter can make? Now that I have a soul forge in my house I find it rather cumbersome to design around because it is 4x4. A 3x3 forge would fit in much better.
There is a small soul forge that is 1 tile obtained as a reward from Scalis.
Well yeah but it isn't going to happen. They have the 4 x 4 monstrosity and a super rare or expensive (if you have to buy it) 1 tile forge as a reward drop. If you keep the sth anvil rather that the east one I used above you can get against an edge. Anyways, I have the broken forge in all my houses, just take a bit of care when you place to get it where it can be used but easily deco'd over.
Selling single tile soul forge on ATL 100m