One of my current favorite cards is this Javier Baez Primary Pieces Quad Relic card. Since the jersey has some dirt on it, it gives the relic some personality. Also, I believe the blue swatch is from the "C" in the cubs logo. It definitely has the feeling of a patch.
Relic cards are fun to collect as they are usually fairly cheap and I always try to keep an eye out for a nice patch or jersey swatch with dirt on it.