Well, the Knog Boomer is rated at 50 lumens with pricing all over the board, depending on power supply and color of the body. For $25.60 shipped, you can get the Rominsen C8 from Shiningbeam that runs off of either 1x18650 or 3xAAA that will give you ~200 lumens. You could either order a mount or DIY using hose clamps, rubber bands, inner tubes, zip ties...