If using rolled oats (not quick), pulse them a few times in a food processor or crush with a rolling pin for a softer toddler texture.
In a medium bowl, stir together nut/seed butter, mashed banana or applesauce, honey/maple, vanilla, and cinnamon until smooth.
Fold in oats, ground flax, chia, and coconut until the mixture holds together. If it's crumbly, add 1–2 teaspoons water or more mashed banana; if too sticky, add a spoonful of oats.
Mix in tiny, soft add-ins. Keep sizes small to avoid choking hazards.
Refrigerate for 15–20 minutes. This makes rolling easier and less sticky.
Scoop 1 teaspoon portions for toddlers and roll into balls about 3/4–1 inch. For extra grip, roll in finely crushed oats or coconut.
Place on a parchment-lined plate and chill 10 minutes to firm slightly. Serve 1–3 balls depending on age and appetite.
Double the batch and freeze half. Future-you will send present-you a thank-you card.