Is that really micro? Isn't that basically a car without a 4th wheel and none of the safety equipment?

I guess if you're not in favor of using a large truck for these runs, you might want to consider a smaller Japanese kei car or kei truck. If you want electric you might look into something like the BYD racco or the Honda N-one.

Just to throw a different perspective. These are small, can be used to move a lot of cargo through rear seats reconfiguration, and can be an interesting choice. Not sure about electric kei trucks though.

Single front wheel trike is a death trap. They banned ATVs like that in the 80s cuz a bunch of people died on them. For a more fun example check the Top Gear episode with the Reliant Robin.

Sorry I don't have anything useful for you.

Pedal bike (e-assist or not) with racks, or a trailer, would surely do for your TTRPG trips?