I think it would be awesome to incorporate rollerblades into Yeeps as a wrist-mounted gadget that doubles as a movement tool.
The gadget would attach to your hands, and when activated, the rollerblades would give you a slight height boost.
Similar to real-life rollerblading, you'd need to push to gain momentum, buut instead of your legs, you'd use your hands to propel yourself forward. Once you stop pushing, youd slide until your momentum naturally decreases. To steer, you’d simply turn your hands in the direction you want to go.