Let's start with the items that you'll have to get from your local home improvement store.

10 X 8mm 8-32 screws and a 2.5mm allen wrench to secure the lenses. If you stroll down the hardware aisle, you'll see all kinds of alternatives if this particular type doesn't suit your fancy.

1 X 8mm M3 Screw, Nut, and a paper washer for the bridge.

Add to this some epoxy and super glue - Gorilla brand is highly adequate. And... some 220 grit sand paper.