Found this on YT and thought Data may like it...

Love that 

I've noticed with my cats that it can take them a while to learn things but once they do they don't forget.   

Fancy building one? I can design and print the plastic bit in the middle and get any bolts. You'll need to get the acrylic and drill it, dowels, carpet tile.

More than happy to help assemble it. Have workmate, hardboard & drill bits.

I'll get back to you on that Snowy, got a lot going on here.