Take a look at this rechargeable LED flashlight on Amazon. It's priced at $19.99, but you can combine two deals to get it even cheaper. Clip the coupon on the product page for 20% off, and use the code 35DGZOIX to get an additional 35% off. You'll only pay $8.99.
If you want to see what else you can score for cheap, browse these Amazon promo code deals.
