Today, after picking up my son from school and having lunch, I decided to pull out the huge box of mixed LEGOs that we had stored in his bedroom closet. Lately he wanted to build something that could carry items in it and he was able to build that today as you can see in the pictures below.
The LEGO Mail Truck/Carrier has two boxes with lids which face back and can hold tiny LEGO pieces.
The next three creations are various desert racers. He was so proud of his creations that he has not modified them since making them.
This two creations are made from spare parts that I had from previous LEGOs that I owned. He was thrilled when he saw them and like his own creations; has not modified them yet.