An idea I had of something we could do every once and a while on Thursdays as a group is a crafting night. We all have different crafts we are working on and there are plenty to level up if you want to try something new. We could pick a town and all plop down in the same area and just craft away.
The benefit there is that we can pool consumables. It gives people a chance to empty out their inventories of stuff they won't use and hand it off to people who will use it. Especially the HQ stuff you have no need for but would be really nice for someone else.
It also allows people to help each other out if they need 1 or 2 of something so they don't have to go buy stacks. Like if Derrick all of a sudden needs a few ingots Pete could whip some up for him.
Finally, if people want to make some requests for specific gear we can get that done. Like if people need new crafting clothes the weavers could make something level appropriate for them. Or if there is a goldsmith around and you would like some +Stat jewelery you could ask them to make it.
It's a low stress thing we can all do despite any level disparity and we can BS while we do it.