Some of the folks here have tons of small Every Day Carry (EDC) Lights . Whats your budget? Some can range from $10 to $200! lol Any color preference?
Following is a good link, its from 2012 and a few things have changed. There are a few newer lights out there worth considering.
I just ordered this to do what you are describing. I just got it in and so far love it. And it is 50% off, and allegedly, if you use a “CPF8” code you can get an additional 8% off. For the money, its one of the best EDC lights I have that runs off a CR123 or CR123R battery. Like the rechargeable part. I use my lights every night.
http://www.foursevens.com/products/QTL-AE
Others will chime in. Good luck amigo!!!