a walker and floor cleaner in one!
If you're wondering how my brother's been spending his days lately, well, this photo pretty much sums it up. He spends hours and hours zipping around the condo with his first invention, which consists of an upside-down Lego bin converted into an aerodynamic, ergonomic and surprisingly easy-to-drive push walker. (You should see how this baby corners.) Mom and Dad further enhanced his creation by taping Swiffer pads to the bottom. So, it's working out quite well for everyone.
P.S. Here I am with the next generation hand-held prototype: