Yes, I do mean the glowglobe. As they are floating right above the person, they should also protect from rain. And there was a scene where one was floating through the rain.
I live in a small apartment and do 20m using an attic antenna. Of course, I can't compete with big outdoor antennas. But from Scotland, SSB to mainland Europe and FT8 to the US or the Caribbean is not a problem.
Even if you don't have access to an attic, there are antenna constructions that can work for apartments. Have a look at "ARRL's Small Antennas for Small Spaces" and RSGB's "Stealth Antennas" as starting points.
Alternatively, you could consider a portable solution where you carry a small HF rig and some wire in a backpack. The Yaesu FT-857D is very popular for this as it's small, all bands, all modes and does 100W. If you search for "Yaesu FT-857D backpack" you will find many suggestions. It's not in production anymore but you might find it second hand. For Yaesu, other options include the FT-891 (no VHF/UHF) and the more bulky FT-991A. Icom has the IC-7100, which is also a little more bulky than the FT-857D.
I agree that it's a bad idea to use non-cryptographic PRNGs as defaults. I think most people are not aware of how easy it is to break them. For fun, I wrote an Android app to break LCGs and Mersenne Twisters:
https://github.com/asnelt/derandom