Quote Originally Posted by curious aardvark View Post
got some like that in my workshop.

Design wise, they're pretty heavy on the plastic, how about poking holes through the sides :-)
Holes through the side..... Hmmm let me think about that? I Think that my have some functional consequences. The sides are 2mm think on this design, it does use about 30m of plastic. It could be possible to reduce the width of the sides and add reinforced areas.