Sadly for you, I don't think the US is as kind to allow farming like the UK does.

Having both an Ipad and Iphone I was able to get the best part of 200 tokens just from installing apps. Once they had loaded, all you have to do is run the apps to get the credit - you don't have to buy anything. I then delete the apps. You can only do them once on each device but some apps give up to 10 Tokens a time for what is 30 seconds worth of work. Then watching the free videos as well as my daily bonuses bumped my total up.

It's been a long time since I made 400 Tokens in a week. Going back about 9 months or so it was possible to farm around 100-150 tokens a day, but over the last few months its slowly got harder and harder, to the point now that via free videos and the like you are often lucky to be able to farm 10 a day now. Thankfully it was an app happy week last week (normally that's not the case either)