I was about to create a post similar to this and here it is bumped right at the top of the forums for me...

I'm in the middle of building a rack for 41 Qt Sterilite bins. The lids on these things lock on the ends, but in the middle I am able to raise the lid to a snake-sized gap with maybe 10 lbs of pressure. Does anyone have specific experience with that bin or have any suggestions about homemade locks for the mid-section of each bin? I'm not even super concerned about the snake escaping, so much as pushing the lid with its nose far enough to get it pinched between the lid and the lip of the bin.