(Quick) 5 lb Free-Weight Exercises for a Newb?

Ivy_leaves

Hey everybody!
I wanted to try and incorporate some strength training into my daily routine.
As of this point, I have what I would call very little or no upper body strength.
At work (where I am 50 hours a week...) there is a pair of 5 pound weights that hang out in the women's bathroom.
I was wondering if anyone could suggest some things I could do with them for perhaps 5 minute intervals multiple times a day? (Got plenty of room in there too).
Pictures would be really helpful for me to learn with too, but I would appreciate any input. (:
Or if this is a bad idea then I'd appreciate input on better methods for strength training for a newbie. (Tried doing some internet research but it was a bit overwhelming so I thought asking real experienced people might be better).
Don't know if it's necessary, but I am 21 years old, female, 5'5.5" and 157#s.
Thank you!