Nothing says “Spread the germs I care” more than food that has required much handling. If you’re too busy to make this yourself, perhaps you could rope the children in to do it for you: just give each toddler a lump of cheese and a box of nuts and tell them to cram as much in as possible. You could even offer prizes as an incentive: Best Porcupine or Best Tree, for example. Or Most Likely to Succeed.