In basics, people use their abilities and available resources to earn their livelihood, needs and luxuries. It is exchange of what they have, rather than producing all their need by their own, with what they need. This commerce has been here on earth since quite a long time what we call business.

So now coming onto the point to answer your question, you will have to analyze on what your abilities and resources are? One of the resources you already mentioned here is $5000. You can ask below questions and refer points, though not limited to this list, to yourself to open few doors of opportunities which you might not have thought so far.

Are you investing this $5000 for your livelihood?
How much risk you can take on this $5000?
Are you looking for basic income or want to invest in something which can act like a seed money to long term business?
Do you have any helping hands like friends and family who can work with you and can contribute to effort/money and share profit?
What are you good at and what you have? e.g.
Drawing/Paintings, Any special art form you can create which can sale?
Driving, do you have car? is it good option for your capitalize on it as a UBER / LYFT driver?
Do you have stock market investment knowledge? A risky option, daily trading can give you good returns.
Can you cook food? you can open a home restaurant which can serve home made food. Deliver it to offices /homes with picking up option from your home restaurant. This can work in local area or small city. You can advertise it on FB/ other social media and can make use of lot of free / minimal pay options to advertise your restaurant. This can grow faster if this idea kick in properly.
Service to Pick up and Drop kids to school
Do you know programming? You can be a freelancer and take small project to develop and earn thru it.
If you are a US citizen then you can capitalize on it. There are many people who wants to have some base setup or partner/s in US. You can be a broker for goods that people want to export to USA from other countries like India/China and wholesale/retail consumers of those goods. You can invest your money to learn on how to do it. OR you can start with working for such a company who does this to learn this business