Toys
Drawbridge
   
Made for my daughter's nursery
school class.  They were
studying castles for a month, but
didn't have a drawbridge ... so,
she and I made one over spring
break.
SketchUp File
Plans Part A (PDF)
Plans Part B (PDF)
     
Do-Nothing Grinder
   
Photo coming soon
This toy is also known as a "BS
Grinder".  Based on informal
surveys, they seem to be more
popular in the midwest of the
USA.  
SketchUp File
Plans Part A (PDF)
Plans Part B (PDF)
     
PVC Bath Tub Toy
   
Photo coming soon
Photo coming soon
Great for little kids.  Encourages
water play and engineering skills.
Component List (PDF)