"Mechanical Horse"
Charles and Ray Eames
1944
"Baby Walker"
Late 1700s
"Toilet Chair"
Anonymous
1935
Just a few images from a great selection at MondoBlogo
More from this book here
And then there's the the Kiddie Koop
found on this new blog
which also reminded me of Carole's Babycage post
Personally, the Snoozatron has always made me smile