If you want to bring something back from Las Vegas instead of leaving all your money on the tables i have a few suggestions where to buy gambling stuff; such dice, craps, tables,old slot machines and other stuff.

Gambers General Store:
800 S Main St (Located 8 blocks south of Fremont St)
CJ’s Casino Emporium:
3663 Las Vegas Blvd (In Desert Passage Mall)
Gamblers Book Store:
630 S 11th Street (located near Charleston Rd)