Things to do that are only open during work hours?

I'm a NYC resident who has the upcoming week off from work and would love to see some NYC stuff that is usually open when I'm working!

Example of the kind of thing I mean- the Grolier Club is awesome and open Mon-Sat from 10-5, making it not IMPOSSIBLE to visit outside of work hours but definitely more logistically annoying. The Dyckman Farmhouse is similarly open from 9-4 Mon-Sat and its museum is only open from 12-4 on Friday and 10-4 on Saturday.

Basically, anything that isn't open in the evenings or has limited weekend hours (particularly closed on Sunday, which is typically my big "tourist day") and I otherwise might not get a chance to see. Bonus points if they're not located in the big midtown tourist areas that will be swamped this week!

I particularly love art museums, gardens, local history, and free stuff lol but I'm open to anything.

Thanks!