My son Jacob is almost 6.5 years old, he does some great drawings.
Here's one he did on my fathers day card..
Has my telescope and laptop doing some imaging, Jupiter, Saturn, the moon and Uranus, and the small one in the top right is Venus.
Oh and his swirly writing is something he learnt from his "girlfriend" at school, in kindergarden
It's great to get personal pressies from the kids