Bear fell in love with Matchbox and Hot Wheels cars when he was almost three years old. so for his 3 year old birthday, i dug through bins and hangers in several stores to find 3 vehicles with the number 3 on them. he got these as a present. i did the same thing for his 4th birthday. once i decided that this would be a fun birthday tradition to carry on, i searched for one #1 and 2 #2 vehicles.
to give him these cars, i hide them. Bear gets such a kick out of looking for them. i figure a tradition like this can be carried on for about the next 4-6 years. the only thing is that as he gets older, i will have to find more cars. that'll mean some pre-planning for me to have time to search and get them all.