Some places do not have clean water or metal tasting water which is sometimes hard to drink. I am fortunate enough to live somewhere hat provides water fountains and I own a water purifier. I always use a reusable water bottle. 

I have a favorite mug for my coffee. Sometimes I forget to wash it and I rush out and have to use a plastic one. I should wash it every night so I do not forget. Using a reusable cup is a small but important action to reduce my waste.

Farmers markets are such a fun place to go!  Yes, it's early morning on a Saturday, but it's worth it!  I work at a farmers market as a fun side gig, and I get to opportunity of picking fresh, organic, and healthy produce while I'm there!  I definitely understand where cost could be an issue, especially for college students, people with large families, or really anyone on a budget. If you're an individual, I think buying a few essential items that you know you need (e.g. leafy greens, roasting vegetables) that will last you the week is a good way to start switching healthier items into your life while supporting our local farmers and community.  There's also minimal-no packaging involved when you purchase from a farmer's market (especially if you bring your own bags!!).