Most people store gizmos and gadgets, shoes and socks in these. I admit that I do too. HOWEVER, the thing I like the most about these are their use in my butterfly rearing hobby. We garden for butterflies in my yard. Once the butterflies lay their eggs on host plants, we wait for the caterpillars to emerge and then harvest them. We put 10 caterpillars in each box and feed them until they turn into chrysalises. This protects the caterpillars from their predators and helps the lifecycle to continue. Once the butterflies emerge, we set them free.