Cute D dinosaur craft at Totally Tots: http://totallytots.blogspot.com/2009/11/now-i-know-my-abcs-d-is-for-dinosaur.html
Other activities can be found here: http://feedproxy.google.com/~r/TotallyTots/~3/wlPe--DXcDc/once-upon-book-all-aboard-dinotrain.html
I let my son pick out his favorite dinosaurs to color from this great dinosaur coloring page site
We also made a diaroma out of a shoe box and various things like egg carton bumps for volcanoes so he can play with his dinosaurs in it.
A book that my boys really liked was: "Science Works Monster Bones: The Story of a Dinosaur Fossil" by Jacqui Bailey and Matthew Lilly.