I'm a fan of showers; if we're camping anyplace that doesn't have free/pay showers, I'll bring along the (extremely large and space-consuming) shower kit.
I also love my mini-fridge... its a Dometic CF-35. Fans of the icebox/cooler will scoff at the (insanely) high cost of these fridges.
But it always delivers; brings a smile to my face when pulling out crisp lettuce after 4-5 days. At home it stays plugged in as a wine and beer chiller.
And it costs less than a 'lightweight' 4-season tent (look at the prices for this one: Mountain Hardwear EV 3 Tent ).
Also: a little buddy catalytic heater can be a nice addition.