Heidi Klum keeps goldfish in her diaper bag to entertain her children.The stunning Victoria's Secret model - who has two children, two-year-old Henry and one-year-old Johan with husband Seal, as well as a three-year-old daughter, Leni, from a previous relationship - admits she is amazed by how many things she needs to keep in the diaper bag.Heidi said: "I need loads of diapers all different sizes. Then there's always wet wipes, milk, water, goldfish - there's tons of things you have to bring to keep them entertained, like bananas."Henry eats three bananas a day!"The 34-year-old 'Project Runway' host also revealed her secrets for getting back her fabulous figure after having children.She told America's OK magazine: "I'm very active. I eat really healthily. I like healthy food, I enjoy it. I like things that are good for me. I splurge on bad food sometimes, but not a lot."Earlier this week, Heidi revealed was addicted to having babies.She said: "I do miss being pregnant. Children are very addictive. Once they start growing up, you miss when they were little. So, maybe."