Speaking of beds... Make one -- another approach.

Gather enough buckets to cover the floor area of the size bed that you want. Cut a 3/4" piece of plywood about 1/2"-1" larger than your mattress. Split this in half lengthwise. Attach the two pieces back together with flush fitting hinges. Cover the top with a flat sheet, stapled to the back side. This will protect coverings from splinters and such.

Lay the plywood on the buckets, so that when you lift one side, it will fold over the other side. Next, cover the ply with a made or bought bed dust ruffle. (Hides the buckets.)

Top with all your spare blankets, quilts, etc. Then add the mattress.

To access the storage, side the mattress over to one side. Throw back the extra blankets, dust ruffle, and raise that half of the plywood. No need to tear everything apart to get to that bucket of beans.

As long as you have enough buckets to support the plywood, spaces between the buckets can be left for other types of storage containers.

Hope this is food for thought.

Lee