AVA's Dominos

AVA's Uncle Les has another idea for play toys: resettable dominos. Isn't it a drag that when you set up a chain of dominos to be toppled, they topple themselves at the slightest touch, and they only work once?

That's where these designs change things. Version 1 has a hinged base for gluing with glue stick down to a base, and Version 2 tries to stay up by being bottom heavy and curvy. So you set up your dominos and can topple them again and again!

These designs are untested. Version 1 looks like it is close to working properly, and Version 2 kinda topples over by itself, lol.

Note that prior art on the subject can be found in this patent:
https://www.google.com/patents/US20100173557
which uses a track to hold the dominos in alignment.