This thread is a great resource!
I too have had no trouble working at the big table at E77 on weekdays; seems reasonable to me they want to reserve the little tables for people more likely to be meeting someone for lunch, etc. I love working there.
Tea Cup Cafe at 77th & Woodside is a good spot with wifi too. (Haven't been in a while but went there often when I lived closer.) It can be loud and a little crowded (it's quite small-- one row of seats), so not good if you need perfect silence, but I like that it's open late (often till 11pm).
Does anyone know how Oda in 969 Coffee feels about laptops? Am I wrong that they have wifi there?
A little further afield, I also like Coffeed; good wifi, tables, they leave you alone, rarely crowded. Communitea in LIC is a favorite working place for me; a beautiful, comfortable space with great food and drinks. (Sometimes can get overrun with little kids—but then so can E77. Does not really bother me!) Not remotely convenient but Bean Square in Bayside is large, solid wifi, lots of tables, feels almost office-y. And of course there are a number of good cafe options in Sunnyside and Astoria now (Tea Plus cafe a favorite for writing/working).
The JH library is good; the beautiful renovated Elmhurst branch is even better.
Also, I have not explored this for myself (seems an odd pairing), but Brooklyn Boulders in LIC has a coworking space:
https://www.forbes.com/sites/sethporges/2017/02/24/brooklyn-boulders-climbing-gym-co-working-space/#2e6d84747dc0And of course there are two WeWorks in Queens now. Great to learn about Austin Space, and really cool that people are thinking about a co-working space in Jackson Heights. I think it would really fill a need—so many creative people, freelancers, work-from-homers, writers, part-timers, etc here.
Not to go too off topic but another neighborhood need I've heard people talk about is artist studio space. The closest are way over in Astoria/LIC/Qboro Plaza (not counting one I know of in Woodside), and seems there might be spaces on Northern, in Corona, etc that could work.