The Rewinders are back!
An almost-comprehensive description of the Rewind mechanic can be found in this question, and an extensive case study can be found in my self-answer to the same. To spare you from having to pore over my ramblings, here are the salient points:
A tiny fraction of the population has the power to rewind time. When a "rewinder" rewinds back to a point in time, everything is reset to the way it was; but she retains her memory of the time that was rewound.
Other rewinders can regain their memory of the rewound period, but only if they could notice a difference between the original, rewound version of events and the "new" version of events.
To prevent things from becoming ludicrous, I've put a two-minute limit on rewinds. There is a complex "stamina" system that enforces this limit, but it mostly boils down to a simple rule: a rewinder can rewind to at most two minutes before the latest time she has reached.
- Note that there is a loophole: a rewinder who gains memories from another rewinder's rewind can still go back the full two minutes. This allows two or more rewinders to perform a "leapfrog" maneuver to move information further than two minutes into the past.
The power to rewind time has a huge potential for abuse (great power, great responsibility, &c., &c.). For this reason, the Community of rewinders has decided that they would never be accepted by society, and all rewinders must hide their power from the general public. To this end, they keep a watchful eye out for any rewinder who uses their power in a way that will cause the existence of the Community to be revealed.
Our heroine Eve, a young adult of normal means, has just discovered her rewind power. Instead of revealing this power to her friends and family, she decides to keep her power secret and use it to make some easy money—but in doing so she ends up drawing the attention of the Community. The question is, how does Eve attempt to make her fortune? Assume:
Eve has just discovered her powers and believes herself to be the only one of her kind. She thus would not take special precautions against other rewinders.
The Community is not concerned about rewinders whose success will be attributed to luck, skill, or other mundane means (including ordinary cheating).
Eve will avoid tedious work if she can (so no gaming the stock market with high-frequency trading, even though it will eventually be lucrative). Note also that rewinding many times takes a mental toll beyond that of the ordinary boredom and fatigue one would experience.
She will also avoid danger if she can (no using her rewind power to become a highly-successful bank robber). Remember that rewinding is not precognition: if you die before you can rewind, you are dead permanently.
Answers should state what about Eve's method reveals her rewinder status to the Community.
The answer that could make the most money for the least cost (balancing physical and mental effort and level of risk) will be accepted. (Of course, I'll upvote all your good suggestions.)