http://www.amazon.com/s/ref=nb_sb_no...rds=hitch+tray
I have item 2 and 3. I can carry a large ice chest, more extra chairs than the entire campground would need, DW's extra shoe bag and a lot more. I used to put three large plastic storage containers full of needed items. I had no, zero, zip basement in the Airstream Interstate 3500. The Axis was like moving into a large warehouse for storage. The bag is completely waterproof and safe for travel. I would bungee is or use straps and they stayed in place.
You can see better quality trays, even aluminum but I picked these because I was new to RV'ing and didn't know what to expect.
Thor Forums
