Even if you have a fairly large capital of $8k, finding a consistent income of $20 per day will be difficult, because that's the same as 8% per month and that's a big presentation because most investments only provide profits of 10% per year.

I don't have a good idea about this, but one way that might be done is to provide capital to someone to sell food on the side of the road. Usually selling food can generate a profit of around 30-50%. However, this is also quite risky because it is difficult to find delicious food recipes, strategic location, and takes time to get customers.

To be honest, it is very difficult to get daily profits from investments because most investments provide annual profits and the amounts are not very large, around 10% per year.