Yeah, I've used lots of different things for weights before. nuts, bolts, washers, clay, bb's, are just a few things I've used as weight in a plane. Look around your house and I'm sure you can come up with something to use for weight. Do you have a Hobby Lobby (craft store) close to you?? They sell the stuff for Pinewood Derby cars there. You can get some bolt on (or stick on if you want to buy some two sided tape) weights that you could use. They should be open until 9 pm tonight (sorry, most aren't open on sunday) if you can get to one.

While nose heavy is better than tail heavy, for the maiden flights you really want to try and get it as close the recommended CG as possible. This will let you see if everything on plane is correct, and your trims are good. Then you can shift the CG to suit your tastes.

Ken