drive construction equipment at Dig This
http://www.digthisvegas.com/get the seal team 6 experience at Machine Guns
http://machinegunsvegas.com/go downtown to Mermaids, get 5 dollars in nickels. sit at a slot machine, put a nickel in every couple of minutes. as long as you do this and tip a dollar or two each time, the waitresses will bring you unlimited free drinks quicker than you can drink them. last time I did this I actually ended up winning 10 bucks at the slot machine, so even with tips it cost me like 5 bucks total to get absolutely blasted. the texas tea machine is the most hilarious.
whoever said get a massage is right, I did this at the golden nugget once and it was great. good cheap place to stay too fwiw.