I have had this on my list to do for a while now and when our easel broke it gave me a perfect piece of wood to use. A few leftover nuts and bolts that hubby no longer needed and we had our own nut and bolt matching activity
I used superglue to keep the bolt in place on the wood and i placed the nuts in a container next to the activity when i presented it to Tara. She chose one nut and guessed which one it would fit until they were all on the correct bolt. Like most Montessori activities this is self correcting so there is no need for the parent to be involved in the activity.