Several years back, I bought a 6′ x 10′ box trailer with torsion suspension to carry all my astronomy gear and also be a command center and to sleep in when I travel to the remote astronomy parties. I have been using this for over 5 years and it has been wonderful. See the options list below the pictures for details.
6′ x 10′ trailer
2 100amp Solar Panels
2 12 volt batteries
1200 watt inverter
RV AC/DC power panel
Coleman Air Conditioner, I power this with a Honda 2000 generator when AC is needed.
Fan-Tastic Vent Fan
Door pull down screen
Murphy style bed
12 volt, inverter plugs (black faced), 120 volt plugs (white faced)
Solar power controller, cutoffs.
lots of floor/wall strip plates for tie downs for equipment when traveling.