Not too long ago, it was time to start baby-proofing our house. We have a lot of sharp corners on surfaces in our house, especially near common areas like the living room. We purchased a cushion edge kit at Toys r Us for around $20. I must say this was a wise investment.
Applying the cushion surface was simple at first. Cut up the double-sided tape to the desired length and apply to the back of the cushion material. Peal of the remaining surface of the double-stick tape and apply to the exposed edge. We used ours on a few brick corners as well as a little built-in bookcase area.
The cushion edge would end up only holding on the brick for a couple days. After that we resorted to firmly reapplying several times before just giving in and using a small dab of rubber cement. This was probably a bad idea in that it may damage the brick long-term. But for now, it's really nice having those jagged surfaces protected from the children flying through those areas.
Overall I would say the Prince Lionheart brand of cushiony table edge Guard was a good investment. We didn't use it to protect a table, but it has protected our child from would-be cuts and bruises from some of the other corners in our home. I would definitely consider purchasing a another kit of this stuff to finish off other areas of the home.