Keep the hose handy. You will need it one day. The rest is optional.I’ve another useless (to me) item, I don’t drink from the fresh ish water tank, only for showering/flushing & washing up, so I use a watering can & a 10l water carrier, so my “another” useless thing (to me) is my hose that is brand new & still in wrapper after a nigh on year.
So
1 - hose
2 - possibly safari room
3 - collapsible drying tray (with holey bottom)
I’ve been mh’ing for a year, nearly, got plenty of time for more “useless to me” thingys then