Create a shop or cafe -
Custom Car Garage - Build a car by paying for each of the parts you would like to add.
Cashing in - Pay the correct amount by using the different coins.
The Change Game - Work out the correct change before the doors close.
Coconut Ordering - HIt the coconuts down in the correct order from the smallest to the largest.
Choose Prices for a money challenge but you could try just numbers, mass, length or capacity for a different challenge.