Tealights are great and I usually have a few 100 count bags in the house and one bag in the car.
Oil lamps and plenty of fuel on hand as well.
I also have 3 NightStar shake flashlights. These work for approx. 20-25 mins. for 30 secs of shaking. I got the transparent ones and these can be placed on end (LED side down) on a white sheet of paper or similar on the table and thus used will light a room same way a candle would. The light is reflected back by the white surface into and through the translucent flashlight body and lights the room. Also have two led infinity lights by Gerber which will work for 40-something hours on one AA battery.
ATB
Pharaoh.