There are some excellent nickel slots at online casinos.  Many of them are excellent imitations of Las Vegas nickel slot machines and many are even better in my opinion.  You can read about some of the coolest online nickel slots at the following sites:

http://www.ranked-online-casinos.com/nickel-slots.html
http://www.ranked-online-casinos.com/free-spins-bonus-slots.html
http://www.ranked-online-casinos.com/aristocrat-slots.html
http://www.ranked-online-casinos.com/igt-slots.html

Have fun & good luck!