how to move if you can't crawl or walk

The boy can make some serious distance at this point. Any day now I expect him to crawl into the kitchen after me. (But I'd like this to be after my visit to my grandparents, not before. But two weeks may be asking too much.) He's still not crawling though. He pivots. He rolls from one side to another (but not consecutively so he's goes places, just as a thing to do). He pulls with his hands, and he pushes with his hands. Occasionally he lurches, which makes him look like an inchworm.

When he pushes, it sends him backwards. But he realizes that it sends him backwards, and he just uses it as another method of locomotion. He sees what he wants, turns himself so he's facing away, looks over his shoulder and pushes. I love that he watches his backwards movement facing the way he wants to go.

This also means that when he backs himself so that a chair leg or piano bench leg is between his legs, he can no longer move, because he can't back up any further, or roll. It's awesome to watch this development.