This is a great way to go when you have a very narrow scope as it seems you have here (well done btw). The downside for groups with wider scopes is turning away

This is a great way to go when you have a very narrow scope as it seems you have here (well done btw). The downside for groups with wider scopes is turning away money if the donor isn't comfortable with this. Even a hackerspace may have this problem. A donor may wish to sponsor some improvements to the metal shop, but if they don't restrict the donation for the metal shop, then some delay occurs, new board is elected, etc, then suddenly those funds get lost in the shuffle and money gets spent on the wood shop instead. It does keep a non-profit honest, but unfortunately yea it comes with overhead of tracking the funds and ensuring they get routed correctly.