portable storage shed

Hi friends I live in my Coleman lantern 32 ft full time and need a storage shed to go with it. Something big enough to put a freezer in. I may move to a different state in about 6 months so it needs to be easily disassembled. I tried a large fabric one but the wind ripped it apart. I'm thinking something plastic that doesn't need a plywood base just for ease of moving.

Any advice appreciated.