I bought the smallest wood dowel they had at Home Depot. Then I went to AC Moore where they had the round wood bases. I drilled a hole in each base which happened to be the exact size of the wood dowel (probably 1/8" drill bit and hole). Then I cut the wood dowl into 2 1/2" sticks. The asteroids are made out of Styrofoam balls covered with some sand and painted brown. I had the asteroids made already so it was just a matter of finding a way to base them. I plan on using these in games of X wing and battlefleet gothic.
These pictures show all the floor plans you need to play a game of Warhammer Quest as defined in the main rulebook. Since Blood Bowl is so popular around my local gaming group, this is also everything you need to play a game of Dungeon Bowl (the only difference is 1 4x4 room so make one extra if you're thinking about building your own dungeon set).
Most of these pieces are still drying in these pictures, but I wanted to share them ASAP. There are still some things I'm going to add to a few sections and there are many dungeon accessories waiting to be added to these pieces. These are the raw stacks in all their dungeon glory.