Roger and I put our heads together and came up with a list of ideas that you might like to consider. Some are sensible, easy to implement ideas, whereas others are perhaps a little far fetched or would depend on where you live. Even if you do not find the right one for you, we hope that you might enjoy a giggle if nothing else.

If you are physically mobile, or have diving skills, this may suit you to a tee. (I do apologize - Roger made me do it!) Do be aware that it can be dangerous, however, and that you do need a licence from the golf club in order to do this.
Once retrieved, the balls can be sold back to the golfers, which can be surprisingly profitable. Perhaps one of the more unusual ways to make money.

If you are self confident, can play an instrument, sing or even juggle, this may be for you. If you have talent and are good at interacting with your passing audience then it is possible to amass a sizeable amount of tips.
Do be aware of the local rules and regulations, however, or you could be asked (sometimes not too politely) to move on.

Your pictures would need to be technically excellent and be able to be used for multiple purposes.
Most stock photography is nowadays taken on digital cameras and you would need good quality equipment. Long lenses may be essential if you are thinking of covering sporting events, or capturing the natural world in all its glory.
If you are featuring people in your photographs do be aware that you will need their permission if you intend to try to sell the pictures afterwards. This can be handled by asking them to sign a model release.
There are other roles to play in Santa's grotto as well. After all he always needs elves to help him out doesn't he? If you are happy to dress up in pointed shoes and ears and are good with children there is opportunity here for you also.

New drugs have to go through vigorous tests before being considered safe to dispense. One of the last stages of testing is human trials, where a group of people are divided into two and some given the drug while the rest are given a placebo. The effects of the trial are studied to see if there are any benefits or side effects to the drugs. Drug companies are prepared to pay for guinea pigs to take part in these trials. Only you can decide if the money is worth the possible risk to your health.
If you have not yet reached retirement age you may like to consider egg or sperm donation as one of the unusual ways to make money.
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