Cupcakes Are a Caitlyn Callback
Right at the start of episode one, when Vi, Mylo, Powder and Claggor are legging it across the rooftops, Claggor grabs a cupcake off a tray mid-heist. Looks like a throwaway gag, but that exact cupcake trap is Caitlyn's in-game ability Yordle Snap Trap, icon and all. Vi even calls Caitlyn 'Cupcake' as a nickname later in the show, so the whole thing loops back around nicely.