If you're looking for a unique Gundam-related display piece for your play room, office, or even your living room, this cylinder-shaped water tank with two floating li'l Haros fits the bill perfectly! This set includes a 17cm-tall water tank with two 2cm Haros (one green and one blue). After removing the water tank from the box, fill it with about 270ml of tap water, but make sure not to add too much or the Haros might not move around inside the water. Leave the Haros in the water without the top cover on for one night, then stir the contents with a stick. Secure the top cover on the water tank, switch it on to light up the green LED and watch as the Haros move around slowly inside the water tank! Repeat the process again if they don't move. Be sure to change the water at least once a month. Three AAA batteries are required, not included.

Also check out the Z'Gok x Acguy set, linked below!