I wanted to bring this thread back to life because I had two cents to put in the pot.
For the application of contact cement when constructing the foam of my puppets I have found that the suggestion offered by Grey Seal in the Foam Book Video is fantastic...... buy a ketchup or mustard sqeeze bottle with those small openings and squeeze out and spread where you need it. I bought a set of three from Walmart for $0.97, which came in red, yellow, and clear. I used the colored ones for the ketchup and mustard in my fridge and the clear for the glue.
I still suggest the brush method if your covering larger areas, but the bottle methods works great when your attaching ends, and seams of pieces and such.
Thats all I had to say for now!