Oil Refinery Mod
25k every 4.6 mins ( Not including the time it takes to sell the oil to the npc )
$3,900,000 For 12 Hours playtime only using Oil Drillers

Normal Printer
$450 every 10 seconds fully upgraded ( Per Printer ) ( 2 Max )
$1,944,000 For 12 Hours of playtime only using 1 Printer

VIP Printer
$700 every 5 seconds fully upgraded ( Per Printer ) ( 2 Max )
$6,048,000 For 12 Hours of playtime only using 1 Printer

Meth
$30,000 every 6.6 mins ( Not including the time it takes to sell the meth to the npc )
$3,272,727 For 12 Hours of playtime only Meth Cooking

Rock Mining ( Depends on luck )
$125,000 every 7.5 mins ( You have to have dumb luck to get this,The Chance of getting this is == winning the Powerball )
$30,000 every 5.8 mins ( You have to have dumb luck to get this, The Chance of getting this is == winning the Mega Millions )
$25,200 every 4.1 mins ( You have to have dumb luck to get this, The Chance of getting this is == winning the NY Lotto )
$8,000 every 2.5 mins ( You have to have dumb luck to get this, The Chance of getting this is == winning the Take 5 Lotto )
$6,000 every 1.1 mins ( You have to have regular luck to get this, The Chance of getting this is == $20 scratch off Lotto )
$4080 every 40 seconds ( You have to have a tad bit of luck to get this, The chance of getting this is == Having just enough money in your wallet for an Arizona ice tea without having to break a bill larger than a $5 )

Weed Plant ( ALOE PLANT )
$2300 every 14 to 25 mins ( depending on chance )

2,300,000 with a 90% Nerf For VIPs
1,500,000 with a 90% Nerf for Users