Laser Pointer Forums - Discuss Laser Pointers | High Power Lasers

Hi, i've bought a couple of cheap $5 blue laser pens off ebay for a festival costume i'm making. They are perfect for what I need as i don't want them to burn anything, just give off a bright blue beam. However, i'd like them to stay on continuously without me having to hold the button down. The laser pens take AAA batteries so I've bought a couple of AAA battery boxes with an on/off switch. What would be the best way to wire this up? I don't even mind taping the existing button down and having it so that the switch on the battery box provides the power instead if that would work, i'm just looking for the simplest way. I just need to which bits to wire the positive and negative to.