I haven't done it yet but have been thinking of making a skateboard rack. I've gotten a few ideas from using google image search.
Haven't seen anything I like for the scooters yet. Luckily there are only two of those so they don't take too much room.
That's a really clever idea, and with some basic woodworking skills, not terribly difficult. Even if it comes out rough, that kind of adds to the flavor.
It looks like you can buy it from that website too for $35.