After the swing was complete, Phoebe felt the need to test it and make sure that it was stable enough for her little brother. So we let her. We put her in the swing, and she rocked it back and forth and back and forth. I think she was actually trying to get it to stop swinging, but her efforts failed her, and she only managed to get it to swing harder and harder. I laughed so hard (not good when you're 9 months pregnant with a 5 lb+ baby sitting atop your bladder), then ran and got the camera (well, more like wabbled briskly to get the camera).
The swing does not have batteries yet, Phoebe is the one swinging it! I love that girl so much.