i fell in love with gridfinty so i made these stackable shelf supports that have gridfinity points on the top and bottom so they can stack or you can use any other gridfinity bins ect on top 

spaces for 4mmx2mm magnets in the top and bottom

i printed them with .4 nozzle .2mm layer lines and 10% infill

i had to use my slicer to quarter the model into parts so it'd fit my printer