This 1/2 in. thick durable black Utility Rubber Mat is made from 100% recycled rubber and makes the pefect ground cover for the SkyShed POD!
Harbor Freight has some nice horse stall mats for a reasonable amount of money that are just perfect for putting in the SkyShed POD. They not only cover the ground (my POD is temporarily just on the grass) but they provide a moisture barrier, vibration dampener, and anti-fatigue mat for when I have to go out and do stuff out there. They're not exciting, but they're functional. I had though about those foam clip-together gym pads, but they tend to be expensive for the amount I need, and they are also cheap in construction. The horse stall mats are heavy-duty, will last a long time, and if I wanted to cut the few inches off the corners to make them sit flush inside the round POD, I can do it easily enough.
I didn't bother cutting them.
I know this isn't an exciting Equipment post, but sometimes, it's the mundane things that make it all worthwhile!