I had an 8' folding trailer. It came as a kit to which point I added treated lumber ply on top.

When not in use, fold up in the back of the garage.
Need to haul lumber, mulch, landscaping, moving people... so handy.
Up to 1100lbs IIRC.

Trailers are less than $500
Want to hold things down... buy some ratchet straps $20
Want to cover your cargo... buy a tarp... $30

Note: the wheels on a trailer like this are only rated 45mph.

If you are tight on space in a garage this is an excellent option.

Trailer (resized).JPG

faz