I use these (spiders under my house too :<):

If you own the house, there are cable runs that replace the quarter round molding (and there is often extra space in the space between the wall and flooring) so it's entirely out of sight.
I use these (spiders under my house too :<):

If you own the house, there are cable runs that replace the quarter round molding (and there is often extra space in the space between the wall and flooring) so it's entirely out of sight.