Okay, not dehumidifiers, but what abut space heater -

https://youtu.be/ND2mrzPnBic

I’m not sure if this is insignificant, due to how people pay, but diamonds are a waste of money. And the people that pay for them are rubes.

Only thing I can think of is if you find a community that you’re interested in, but it doesn’t have a lot of activity, check other instances for that same community.