Do you make your own vegetable broth?

I’m curious if I should consider making my own vegetable broth.  The Organic Gluten Free broth I purchase is about 4 dollars for a large box and it is 4 quarts of broth.

I don’t tend to have enough scraps per meal to make a broth.  Would I be able to freeze the scraps and make a broth at weeks ends?

Would anyone recommend this, or is it just a waste of time?