Income for a teenager

Hi guys! I am a teenager and I have trying to brainstorm ideas to generate income as a teenager. My two ideas so far are

1) Screen Printing T Shirts Hopefully I could have a few designs and maybe do larger orders. The main thing is that this sounds fun and an artsy thing I would enjoy doing. I am not sure how much of a market there is if I do this.

2) Help out my elderly neighbors by taking their trash can out to the curb every week for the garbage truck. I am thinking charging $12 a month per can for this. If the price needs to be lower I could do that, I just feel like 12 is reasonable. Theres a similar company that my cousin works at out of town that charges $20 a month. I assume if i get 20 buyers it would take about 3 hours per week.

What do you guys think? How could I refine my ideas? Any more ideas?