While you are absolutely encouraged to run whatever kinda business you want and makes you happy, I would recommend (from my own experience) that you start by thinking in an entrepreneurial mindset.
Start with books; can probly find me online or at the library. Biggest thing I see is to “think about a major problem people have and figure out a way to solve that problem.”
If I’m being honest, your business ideas so far sound like they came from youtube business “gurus,” and I would avoid watching videos like that; they’re gimmicky, and not really helpful for you. Instead it just helps to funnel i come to them, and often they never offer any real value.
Like POD for example. It’s incredibly oversaturated, and because of that, it will pose a huge challenge to make it a meaningful income.
Does that mean you shouldn’t try either of your ideas? No! I think you absolutely should. But my point is to make sure you’re getting meaningful information and making sure you have a solid plan to keep revenue flowing.
Don’t be afraid to experiment with different ideas either; by that I mean, when you get asked the inevitable “so, what do you do?,” you can say “I’m experimenting with ……”
First, careful read the specifics of the grant award and it’s purpose. I’m not an accountant (you should consult an accountant; financial services), but if you are required to pay any taxes on that grant, you will have to pay em no matter what; likely whomever funded the grant reported that as their own write off. You don’t want to be audited.
If the grant was specially for equipment costs, then you cannot write that off as a business expense (at least as far as I’m aware). Only your income outside of that grant that was used for equipment could be written off.
Now, if the grant was not specified on its purpose, then you might need to prove that the grant money “wasn’t” used on supplies; then you might be able to write it off.
If you’re in the US, and make over $600 in income from something, then it needs to be reported as self employment income(aka sole proprietor). So having already made $2500, you are already in business as far as the IRS is concerned.
Again, I am not an accountant, and you should contact a local financial planning service to consult with them on it. Operating a business that includes grant money for its reported income can be tricky. If it’s incorrectly reported, you could end up being required to pay it back in full, or even with a fine attached. Consult a professional. It will be worth the money to do so.