Ambah.. Matilda puts her cars in a row & then rearranges them in a line and then in colour order and then again she'll put them in the "car park".

She also empties out all the coins in our piggy bank and puts them back one at a time.

She'll take up to 30 minutes on each activity, so to me it sounds normal We have a close friend (remember Levi??) who is strong willed as well & is very obsessive compulsive about certain things... if they drive home a different way he has a tantrum. He will refuse to get out of the car until they go back & drive home the right way. He has to eat out of a certain coloured bowl or plate and will not drink anything out of any cup that is yellow.