Medium rewards work well for 6–8 year olds. Visible progress every day.
Big rewards feel forever away to a six-year-old, and they give up before the second week. A medium goal like a building set lands in about two weeks — close enough to stay motivating, real enough to matter.
What's a good first goal size?For ages 6–8, 60 stars — about two weeks — is the sweet spot. Long enough to build the habit, short enough that they don't lose faith.
Building set or LEGO specifically?Any building set works. Pick whatever your child is actually excited about — the reward only motivates if they chose it.