I mentioned to Melanie yesterday that we use Lego to protect our electrical cables from wandering bunny mouths. Here are two of Dan's creations. This protects a lamp, the router, phone and fridge cables. Despite the open weave design, it's very effective.
In the living room the TV wire, which has fallen prey to Big Grey and had to be replaced, has a more compact box to protect it (yes, I know the area needs a lick of paint, Big Grey sits there and occasionally nibbles and scratches).
I like this box as it's a nice mixture of the zingy Lego I bought for Dan a few years ago and some of his old stuff which is a bit more weathered.