I started by trying to make a perpetual ball machine, but in the end I made lift/element hybrids. Eventually I made a ball machine
where network 2 did not have any motors. Here's a guide to more of these!
If you have designed any lift/element hybrids, contact me and I'll add them!
Guide to all Knex Ball Machine elements: http://www.instructables.com/id/The-Official-Guide-to-Knex-Ball-Machine-Elements/