We have a "johnny-jump-up" that we've had since Brendan was about Sadie's age. We recently let Sadie try it out, and she couldn't be happier! She
LOVES to jump! Just look at her smile! I'm including a video as well, but just know that there is no sound (we don't have a camera that technologically advanced yet).

Side note: I have absolutely no idea how to rotate the image in this video clip, so turn your head sideways!