My sister, Jessie, loaned us the bumbo chair she picked up for her son (still waiting for him to have his birthday!), and while I don't know that it is worth $40 new, it has been quite handy to have around! Dax doesn't love the chair, but he doesn't mind being in it either!
While I have yet to capture this on film, Dax started waving yesterday. It is the CUTEST thing! He takes his fingers and closes them towards his palm and then opens them up again when we do it to him saying "bye-bye". I will get it on video and post that soon!