Coffee can planters --cheap idea for planters. Similar to the one where you screw a coffee can to a post to keep your garden trowel and gloves in and then put the plastic lid on to keep them clean and dry
"Small freshwater gardens are fun to create and simple to care for. And all you need are a few floating or submerged greens in a vintage aquarium, an apothecary jar, or a sleek glass cylinder." That looks like a water lettuce I spy there.