Honestly a frog brooch pinned to be half way peaking out of a pocket on some jeans is absolutely a thing you can do.

Or you could put flower or leaf brooches on your jeans so they look like fancy designer embroidered jeans except instead of costing a billion dollars to get it is just a pair of jeans you already had and some second hand brooches you can reuse on other outfits and share with your partner.