While little ones love to spy these polka-dotted beetles, adults know that these cuties' real appeal is the service they perform for your garden: eating insects that are harmful to plants. Start by filling a round pipe (about six inches wide by one foot long) with bamboo, cane, or scrap wood. When you're finished, stick the habitat in your garden on a stone or ledge. The ladybugs will make nests inside the habitat's hollow spaces -- and watch over your garden, too.
Martha Stewart Living, March 2012