Budget Pesto

Pine nuts are expensive. Therefore, swap them out for something locally much cheaper: pumpkin seeds. Pesto is basically a method of preserving basil after harvest, and can keep in the freezer for 6 months, or in the fridge for a month.

These ingredients are in order of how much there should be in the sauce. The proportions are very vibes-based and should change based on your tastes. 

Basil leaves and green stems and flowers
Pumpkin seeds raw
Parmesan cheese
Olive oil
Garlic clove
Lemon juice
Salt

In your blending thing, first blend up the parmesan and the pumpkin seeds for a few seconds. Then add the garlic clove and repeat. Then add everything else. 
If you're going to put it in the freezer, add a top dressing of olive oil to the jar.