Slinky - Look here and here.
Whee-Lo - Look here and here.
Super Elastic Bubble Plastic - Look here and here. (This one is long but worth it. Read it all.)
Etch-a-Sketch - Look here and here and here and here and here.
Slinky - Look
here
and
here.
Click Clack Blocks
Super Elastic Bubble Plastic - Look
here
and
here.
(This one is long but worth it. Read it all.)
Etch-a-Sketch - Look
here
and
here
and
here
and
here
and
here.
Whee-Lo - Look