I was curious so I applied to Leapforce and started studying the materials and taking the exams. I got through I think 2 exams but then didn’t pass the 3rd. My excuse was I got a little bored and didn’t prep properly. It looked pretty good for the right kind of person, which I apparently am not. 
@NJres, the Leapforce guidelines for grading search results have changed a lot since I started the job. It used to be more intuitive. I’m not sure I could pass the exams with the new guidelines because a lot of the changes are harder to grasp. Leapforce occasionally offers test retakes. If you are still interested you should send an email.
Do u live in a high demand area for hotel rooms? Let out a room in your home via AirBnB?
Just make sure the extra income does not put you into higher tax brackets or the awful alternative minimum tax. DH used to do part time work and the additional taxes eroded the additional income.