Is there an easy way to make a reflector?

Iam looking for a way to make a little reflector or lamp shade type thing for my ML 400w. What kind of materials do I need to buy? Should I get them all at Home Depot? And how much do you think it will run up to be ($$)? This is going to be my first grow, so help me out!!
thanks
-win

sorry i ment to say MH 400w

Just buy one mate!

And i think you should read this, everything you need to know. Especially for first time growers, it will help alot. Promise. READ IT ALL LIKE 8 TIMES!!!!! Im not kidding, its alot to let soak in.

Just dont make it too thin, always slicin my fingers on the frickin reflector.

If you insist on making one, find a slab of thin 1/8' aluminum and bend the middle at 140 degree angle and then in the middle again on ech side

hey thanks saynotodrugs!!!
that really helps out
I mean i would buy one, but iv called all these garden shops around my area and they dont sell them.
and i dont have a credit card so i cant order things online!

mylar and cardboard!!!! works mint and u can reuse the mylar! just get a few cardboard boxes and cut w/e shape u want!..wrap it with mylar! cheap and easy!

I have my plant in my wardrobe, and i put tinfoil around the walls and there workin fine =]
easiest and quickest thing to do if u ask me lol

tinfoil is bad it makes hot spots and is a fire risk. also it does not reflect the light like you think it does. mylar or flat white paint is best.

DO NOT USE TIN FOIL..."ALUMINUM FOIL" JUsT LIKE DANKFORALL SAID..IT MAKES HOT SPOTS, AND REFLECTS THE LIGHT AT OBLIQUE ANGLES...that is what i learned from george cerventas ultimate grow dvd! just pick up some mylar its not that expensve!

I have been using aluminum foil for two years and never a burn spot. It would need a parabolic shap to burn your plant and a wrinkle isn't going to forum that so IMO aluminum foil burning a plant is a MYTH as it hasn't happened to me. PEACE