Fidget Toy Thread

I just bought this magnetic slider. It's pretty good as far as the amount of movement, sounds, and configurations it can be put through. But I want more. But I'm looking online and this is the only one that I was interested in getting. Others have either less pieces (two rather than three), are too simplistic, etc. I feel like I can design something more enjoyable to use, but I don't have that know how.