There is so many touristy things to do in Vegas. I have just provided details of a few of the most common ones. Google will be the best bet for seeing what is available.
Fremont Street
Fremont Street, Las Vegas, NV
Old School Las Vegas. Lots of fun things to do. There is a zip line that runs down the centre if the street.
Las Vegas North Premium Outlets
875 South Grand Central Parkway, Las Vegas, NV 89106, (702) 474-7500
Shopping
Las Vegas South Premium Outlets
7400 Las Vegas Boulevard South, Las Vegas, NV 89123, (702) 896-5599
More Shopping
The Neon Museum
770 Las Vegas Boulevard North, Las Vegas, NV 89101, (702) 387-6366
Were all the old Vegas signs go to die
Stratosphere Casino, Hotel & Tower
2000 South Las Vegas Boulevard, Las Vegas, NV 89104, (702) 380-7777
If you love a thrill, there some extreme rides that fly off and over the side if the observation level
Hoover Dam
NV 89005(702) 494-2517
I personally have not been here as yet. I am sure you would be able to either hire a car or catch a tour bus out there.
Grand Canyon National Park
AZ(928) 638-7888
Lots of companies do tours. You could spend your blackjack winnings on a helicopter flight tour.