Bill has found this great listing for free shelves on CL.
Now I am sure you all know that we are in need to modular standardized shelving solutions at the hackspace. So I think Bill and I and who ever wants to help will make a trip to pick some of these up. (Maintaining social distance and disinfection often of course.)
We might end up with some shelves left over so if your shelving need an upgrade, keep a look out.
Anyone that wants to help please leave a message here.