The Big Pink has 2 storage compartments under the bed. They are in the very back, so It's a little hard to access, and was used for seldom used items.

So I thought I'd fix that .... and added an outside access door. There are 2 layers of 2" foam , so I had to cut through 4" of foam.
There was canvas on the inside, outside, and in the middle. The adhesion everywhere was very good.

almost finished .... just have to finish cleaning up. I used 4" angle sheet metal, and screwed into the door frame to provide a solid mount

The door is right next to the power input connector, and I'll keep the jack stands in there, since they get used at the back.