Here's a rolling padded case that fits up to 88-key keyboards. It's scuffed up, but it rolls well and protects instruments. In fact, I replaced the wheels recently, so they'll be good for a few years. The end handle extends like those on roll-aboard suitcases.
It provides storage for a pedal or two, a power supply, sheet music, an iPad, and some cables.
New, these sell for about $150 on Reverb. Used, and in similar condition, you'll see them for about $120.