I don't have any table runners, per se, but I use the little "doll quilts" (if I give them as gifts I call them table toppers) I make or get from swaps all the time. I have one on my coffee table, one on top of the TV cabinet, and some that I use sporadically in the middle of the kitchen table, to put the sugar bowl, salt and pepper, etc. on.
Also have a runner on my dresser in the bedroom, but it is a woven souvenir of Peru, not a quilt.