Little fun for dad ( or mom) and child using k'nex and paint
Step 1: What You Need
K'NEX parts :
1 solar motor with wire and panel. I got it several years ago, il don't know if this models still exists. You can do it with battery motor as well.
white connectors (the ones that look like snow flakes)
3 or more water paint tubes
3 or more milk bottle lids
3 or more tea spoons
1 wood stick or 1 fine paint brush
squares (21 cm by 21 cm)
Step 2: Make 3 Big Stars
Make 3 big stars with white connectors (aka snowflakes) and red rods
Step 3: Feet Under the Motor
Put a white connector at the end of each red rod and fit under the motor
Step 4: First Star Upon the Motor
Put a red connecor at the end of each red rod
Step 5: Second Star Upon the Motor
Attach the second star with the red connectors and that's finished
Step 6: Have Fun
Put the solar panel outside the house because it would not work behind a window.
When it turn drop paint with the tea spoon.
Gently mix with the wood stick : you are an artist.