Surface aquarium plants are particularly useful: They leach nitrates (fish waste) directly from the water column via their beautiful trailing root systems, and they provide a sense of safety and shelter for your fish. But beware placing them in aquariums
What a great idea! Kids are so curious, and this helps them learn about fish and pets, but might deter them from climbing on high furniture to get a good view of the a bigger fish tank higher off the ground in the living room, etc.
DIY Project Accessories, Gumball Machine Fish Bowl