Twice lately I've found myself trying to make pictures without a card in the camera. Twice! Both times I was just snapping pictures and finally looked to see what one looked like and there was the big banner across the LCD screen "NO CARD IN CAMERA". I was irritated with myself but there was nothing I could do; no card, no pictures. Grrrr!
Where was the card? Resting quietly in the computer at home. Have I learned my lesson? YES! I can't stand to be without a camera! From now on, check the battery and the card slot before dropping the camera in my bag.