Splitskin Doll is one of the simplest, a 2/1 creature that lets you draw an extra card when it enters play, though it also forces you to discard one unless you control another creature with 2 or less power
Toph, the First Metalbender Toph Beifong is a fan-favorite, and her card, Toph, the First Metalbender, perfectly captures her spirit
As an uninkable card, Baloo sitting in your hand with only four willpower and 6 cost makes him a pretty sad sight if you don't have the ink to play him, and even when you do, there are far better options, such as Maui Half-Shark, the all-around better card for the same cost
If this Equipment was attached to a creature, attach the new Equipment to that creature.) The exchange happens on resolution of Arcanum Things's Equipment swap ability and is simultaneous