Homemade fertilizer?

Anyone have any idea of what I could use for a homemade fertilizer?
Here's where I'm tracking my plants:

https://www.rollitup.org/outdoor-growing/422083-first-grow.html

Compost tea or manure tea might be the cheapest.

I've heard of people using diluted urine as a source of N, alot of your off the shelf fertilizers use N derived from urea.

I'd recommend investing the 5 dollars into some cheap 10-10-10 fertilizer for veg. Just remember to start at 1/4 strength or 1/2 strength.

peters 20-20-20

go look on craigslist for cheap or free chicken or cow poopie, and u can make tea and compost