Brainstorm with friends

If we can't find sticky notes, stickers, or enough cardboard, what can we use instead for the 'write one invention idea on each sticky note' and prototype steps?

Use index cards or squares of printer paper taped to the wall for the 'write one invention idea' step, use coins, buttons, or drawn checkmarks if you don't have stickers or tokens for voting, and substitute cereal boxes, milk cartons, or folded paper instead of large sheets of cardboard when you 'Build a simple prototype using cardboard tape scissors and recyclables.'

What should we do if the 15-minute brainstorm isn't producing many ideas or the prototype keeps falling apart during building?

If ideas stall during the 15-minute timer, switch to a quick round-robin where each person must name one idea while a partner writes it on a sticky note, and if the prototype falls apart reinforce weak joints with extra tape or folded cardboard supports while you 'Build a simple prototype using cardboard tape scissors and recyclables.'

How can we change the activity for different ages while still following the steps like voting and sketching?

For preschoolers shorten the timer to 5–7 minutes and have adults write ideas and place stickers for them, for elementary kids use the full 15 minutes with simple sketches and basic scissors/tape building, and for teens add constraints (e.g., only recyclables) and require a labeled sketch before building and posting on DIY.org.

How can we make the invention project more creative or personalized after choosing the winning idea and building a prototype?

Enhance the activity by assigning roles (timekeeper, reader, builder), picking a theme before the 15-minute brainstorm, decorating the prototype with markers or paint, writing a one-paragraph description to upload with the photo on DIY.org, and running a second round to iterate on the chosen idea with different recyclables.