Anyone own the iPad toy tie-ins and think they're worth it?

[dclose]

Anyone here own those iPad toy tie-ins by Apptivity, like Angry Birds "King Pig" or Cut The Rope's "Om Nom"? I'm talking about the physical touch-sensitive toys that you place on the iPad that opens a different way of playing an existing game. Anyway, Target has a bunch of them on clearance, and I was wondering if any are worth it? Any recommendations?

[drelbs]

Our 4yo daughter got two of the Cars for Christmas last year and she's had fun with them. The interesting thing about the game is that it recognizes each car when you place them on and changes things a bit accordingly - i.e. it's not just a fancy stylus.