If you happen to have the Ghostbusters (2016) Story Pack, there is also one early on in the game you can get. Once you have pushed the object down the Stairs, there's a room you go in with a Machine that needs repairing.
I put Abby Yates on the Toypad, switched her to Jillian Holtzmann by holding Y, then repaired the Machine & got a Minikit & loads of Silver & Gold Studs, plus this Rare Achievement :D