Create Abstract patterns with Colorwheel Pinwheel

What can we use if we don't have paint, a pushpin, or a pencil with an eraser?

Use markers or crayons to color the wedges instead of paint, a small brad (paper fastener) and straw or skewer in place of the pushpin, and a cork or thick bead instead of a pencil eraser when following the folding, cutting, and pinning steps.

My pinwheel won't spin or the folded tips are stuck — what should I check and fix?

Make sure the paint is fully dry before cutting and folding (step 'Wait until the paint is fully dry'), don't cut past the center circle, and leave a little space when pushing the pushpin into the eraser so the pinwheel can spin freely, or loosen the pin and add a small bead between the paper and eraser to reduce friction.

How can I adapt this activity for preschoolers or older kids?

For preschoolers, pre-fold the creases, pre-cut the four slits and let them color wedges with crayons or stickers, and for older kids have them mix paints to make the secondary colors precisely, draw the center circle with a compass, and experiment with cardstock or different pin sizes for stronger spin.

How can we enhance or personalize the colorwheel pinwheel once it's finished?

Personalize it by adding a clear coat of diluted glue or varnish for shine, glitter along specific wedges, write names or symmetrical designs on wedges before folding, make a mobile of several sizes, or photograph and share the finished colorwheel on DIY.org as suggested in the final step.