Can I live on used goods?

I’m volunteering for The Angel Museum today by sitting at their rummage sale site and taking donations. As I sort through donated holiday decorations, kitchen items, and glassware, I wonder if I could commit to significantly limiting the new items I purchase.

I could obviously still buy food and hygiene items, as well as non-self-makeable items for my crafts (I.e. super glue, spray adhesive, etc). But what if I committed to only buying my clothes, household goods, furniture, and books used?