Remember when you were in grade school and your backpack had so many colorful keychains hanging off the zipper that you were pretty sure they weighed more than your books? I miss those days. Apparently, so did the creative teams at Fendi, MCM and several other high-end bag designers, because keychains are back. OK, we call them "bag charms" now, and you're more likely to see them on an expensive satchel than a JanSport backback. Call 'em what you want -- we're on board. From luxury charms resembling our favorite designer to colorful pom-pom-adorned bag charms, these trinkets make us want to start a new collection. Here's why you should, too.

If there's any doubt the bag charm trend is for grown-ups, let Anya Hindmarch change your mind. We spotted these sophisticated leather tassel charms on bags at Hindmarch's autumn/winter 2014 runway show and instantly fell in love.

What's better than carrying around a fuzzy version of fashion's patron saint on your bag? Fendi's Karl Lagerfeld bag charm was originally a gift to the designer from Sylvia Venturini Fendi. Then, Lagerfeld sent Cara Delevingne down the runway at Milan Fashion Week sporting one, and they've been highly coveted ever since.

Blame It On Fashion blogger Marie Hindkaer pairs a classic Louis Vuitton monogram design with a very modern bag charm.

This cheerful pom-pom bag charm on a straw JADEtribe beach tote just screams "vacation." But we're pretty sure we'd love it 365 days a year.

Image: Love You, Mean It