Stucked - Arkanoid

I hope this is the right place for this :P

Well, I'm programming with Visual C# 2005 Express with XNA.

I already have a Arkanoid working, but with two players at once.

Until here, it is kind of OK.

What I want to do now is to add some weapons, but I'm really blank right now.

I have class Game, Bola (Ball), Bloques (Blocks), Jugador1,2 (Player1,2), listaBloques (BlockList). And I think they are all :P...

Any concrete ideas? O=.. I have the images already done. Just want to drop the image of the weapon randomly for a random destroyed block. Then, the ball gets and effect like, destroying more blocks with one strike, or bullets (changing the bar image). Also, it can store and change the weapons with a shortcut like CTRL + C..

How can i do that simply? O=

Thanks in advance. I'm really in the hole right now xD.