Tap into a Singapore MRT station these days and you might hear a light-up Pokéball click, or spot a miniature Gardenia bread loaf swinging from someone's tote. EZ-Link charms — tiny keepsakes with a contactless transit chip inside — launched in 2015 and have quietly turned into one of the most feverishly collected items in the city.

The idea is simple: instead of digging out a fare card, commuters tap an adorable trinket at gates and bus readers. But the designs are what hooked people. The very first release was a set of Hello Kitty charms in four colours, and the roster since has grown gloriously weird. There's a mahjong tile engraved with the character 發 that glows green when you tap in, an OATSIDE oat milk carton in Barista Blend or Chocolate to mark Earth Day, a Scotch-Brite scrub sponge, a bag of FairPrice roasted corn cashews, and a KOI Thé bubble tea set with the brand's BB Bear mascot in an "I heart SG" tee, released for Singapore's 59th National Day at $23.90 with $3 of credit pre-loaded.

Pop culture tie-ins have been a big part of the appeal. Pokémon's Pokéball charm from 2021 has an LED that lights up at fare gates, and its Ultraball and Masterball siblings were exclusive to Singtel and Challenger stores — the classic Pokéball is still stocked at the Pokémon Center in Jewel Changi Airport. A Star Wars BB-8 charm followed in 2016 at $29.90. There's even a meta single-decker bus charm with working headlights, sold only at a SimplyGo Adventure Quest pop-up at Bugis+.

The catch? Scalpers. The recent Gardenia bread loaf charm retailed for $21.90 at mall vending machines, but bulk buyers cleared the queues and resold it on Carousell for upwards of $50 before ordinary fans could get one. It's now completely sold out, and similar fates have hit the sponge and mahjong charms. SimplyGo may need to bring in purchase limits or bigger restocks to keep things fair.

For visitors, this is a genuinely fun slice of Singapore commuter culture. If you're in town, check SimplyGo's social channels for current drops — vending machines in malls are the usual sales points, and special editions often tie into events like National Day or Chinese New Year. Even if you can't score this season's hot item, older charms are hunt-able on resale platforms, and the Pokéball remains a reliable souvenir buy at the airport. Just note that discontinued charms may have expired chips; a decade-old Hello Kitty charm might be cute on a bag but useless at a fare gate.