Very Nice! I wish I had the shop you do. I just purchased an A-Frame online and hope to get it pretty soon, though we still have snow on the ground!
I have not purchased anything for the boat in years when I added a removable T-Top.
I also made a seat / fuel tank to save a bit of room. The seat cushion has a pull out safety cushion and the top flips up for some storage above the gas tank.
Now with the A-Frame I am adding, it will help keep some equipment out of the way and off the tubes and floor.