Amazon has opened pre-orders for the Benelic Castle in The Sky Robot Soldier Planter. According to the product page, the merchandise will be released on July 30, 2020, in the U.S. region. If you are interested, you can pre-order with the following link from the online retailer:
Measuring nearly 8″ tall, this piece of animation brought to life is a planter decoration of a damaged Robot Soldier head from Castle in the Sky. Recreate the Gardens of Laputa by putting a small plant inside or simply place it inside a terrarium or aquarium.