there are a variety of brands just like dynamat that sell products for less than the cost of dynamat...
raam mat
www.raamaudio.com
brown bread
www.b-quiet.com
second skin
www.secondskinaudio.com
edead
www.edesignaudio.com
and i probably forgot a bunch more...
if youre looking for ghetto things that you can use from home, then tell me, what is it youre trying to achieve through deadening?
kill a rattle? dampening? road noise? adding random weight to your car?