XinTD C8 V5 XM-L2 U3 3D 18650 Flashlight
This looks like the current version of the light I got 2 - 3 years ago. $29.99 and bright enough to be my main light it will work fine in the daytime without exceeding your $50 budget. Adding a good charger and some good (Panasonic) cells will exceed $50 if you don't have these already.