Today, at last, I got around to re-building my garage shelves, so my tools finally have a proper "home". It turned out to be a project of the kind "assemble IKEA stuff without instructions and with some parts missing", but the results were good. Though the angle brackets to connect the shelves to the wall were MIA, I used different ones that I had on hand, with screws I happened to have around. The majority of the weight is carried by the shelves' L-feet anyway -- I am quite sure I wouldn't want to trust an American-style drywall to carry any serious weight ;).