Corner protectors aren’t just for homes with little kids running around constantly bumping into things: I have learned through painful experience that the sharp corners on melamine-coated fiberboard easily rip through fabric and skin.
I run a round-off router bit over all my exposed woodwork edges whenever possible, but with glued melamine and some finished furniture you can’t do that. A few years ago I found some soft plastic corner cushions that unobtrusively provided excellent protection against scrapes and dented foreheads.
Recently I built a bunch of new shelves with exposed corners that I wanted to soften and I spent weeks looking for the same corner protectors. It turns out that my preferred solution is also by far the cheapest of the many competing products ($3.50 for eight), and that these are available only at Babies R Us.