 The engineering challenge is to get the 3' tall x 2' wide board to STAND UP! Here they have used hardware store "L-brackets" on both sides of the bottom board. Good Design idea
|  Another L-bracket design. This one is stronger and provides more rigidity to the board since the L-brackets are longer.
|  Thin pegboard is wobbly. Using the longer braces gave the vertically standing back board more rigidity. Good design idea.
|  Shelf supports as vertical braces. The ones in the back were a bit too big, though.
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 Plywood backboard & plywood base. Vertical rigidity is provided by the triangular-shaped end pieces. With one of these on both sides, the project was nice and stable.
|  Here the vertical orientation is provided by slotted 2x4 "feet." This worked fine, although you have to have a 'snug' fit in each slot to keep the vertical board from wobbling.
|  Another "slotted" 2x4 foot design.
|  Slotted 2x4 "foot" design
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