Incase some of you don't know or realized, the Revoltech Yamaguchi's Gurren Lagann figurine (series no. 050 by Kaiyodo) comes with THE ALMIGHTY METALLIC DRILL!
I just bought mine, and this is a sample photo to show it:
if you're curious of the scale on human hands, etc., request for photo yo! (but all I can gurantee is it is the exact scale of a drill necklace on you like how you seen it in the anime, worn by Simon)
If you want a beautiful kickass Gurren Lagann figurine AND the pretty drill for cosplay, I suggest YOU GET THIS TOY MODEL!
So far standard price is $30, depends on where you buy it and where you live.(for shipping) If you want to know online stores that sells it, comment, and I'll re-search the links.
For those residing in U.S or U.K, this is considered a GOOD BUY cause I believe if you were to make your own drill or buy it off from someone, it will cost around $15 and it does not include shipping. So if the drill is estimated to cost $15, then the remaining $15+ for the mecha figure??!! ZOMG, VERY SWEET.
(of course, I'm NOT stopping from anyone to handmake the lovely drill, but you know how lazyass some of us can be LIKE ME XDDD plus the drill from gurren lagann's revoltech figure is OFFICIAL MERCHANDISE!)
Unless if you live in Malaysia, I can recommend to you where to buy it (since I already have one), just give me a holler!