Any ideas for puzzles that encourage my players to talk to each other but can be ported to online?

The game I run is fully online and crosses timezones, but I want to be able to give my players puzzles since they like them, but it always ends in them just quietly trying to do it themselves since I have only been able to figure out puzzles they're basically doing individual puzzles at the same time until someone figures it out

I want to find something that I can use to make puzzles whilst also allowing my players to work on the same screen, so to speak, to solve it.

Does anyone know good resources?