[header] How to design a habitat for a ladybird [title] Poke holes in an empty plastic box. [step] Choose a box that is a least 6 inches on each side, with a lid that seals. [substeps] You can find large plastic food storage containers at a thrift store or dollar store. 
Using an icepick or a slender screwdriver, poke 6-10 breathing holes in the lid. Make the holes big enough to let air in, but too small for the ladybugs to escape.