This is a simple, classic kid activity - but I was surprised at how much my nearly 6 year old loved it.
Gather up some nuts and bolts.
You can use ones you have in the garage or buy some from the hardware store. In fact, you can let your child help pick some out. There are some really interesting ones! The ones we used were all really close in size, so it was very challenging.
Match the nuts and bolts and screw together.
My son loves helping us build things, so this was extra engaging for him. I think most kids would find it a fun puzzle - and the fine motor skills along with the practical life skills make it a useful game. I plan to add in some new nuts and bolts from time to time. And when he is done with this tin, we can use the hardware to build and connect more things.