You should spend some days in evaluating all kinds of items. When you see price is lower than normal, you should buy items as many as possible. In order to make great profit, you should invest in two thousand to ten thousand items, depending on how expensive they are. This is the most difficult part in items investment, because you never know the price of items will increase or not.
Become a dog walker if you live in an area where they are in demand. You can walk dogs for people who own dogs but who are too busy to walk them. However, this can be a demanding job, especially if you end up walking a few dogs at once or if you are walking dogs throughout the day, so ensure that you have the physical stamina for this type of job.