Reduce use of plastics in general!!
Use glass containers to store food. Use wax paper and wax paper bags to wrap sandwiches, etc. Make your own cleaning products from vinegar, borax, baking soda, lemon juice, etc....that way you won't be spending money on multiple bottles of glass cleaner, laundry detergent, all-purpose cleaner, etc.
Use your plastic shopping bags to make reusable shopping bags. YouTube has plenty of videos that tell you how to turn them into "plarn" and crochet them into reusable bags.
Buy products in glass containers rather than those in plastic (depending on the product, it may be much healthier to do so anyway). Vitamins, cooking oil, beans, face cream, juice...all are available in glass containers which are easily reusable and most can be recycled infinitely.
Use washcloths instead of plastic bath poufs.
Use glass bottles to bring water with you.
Buy products in bulk packaging to reduce plastic waste.
Learn to make your own personal care and beauty products so you don't have to purchase overpriced stuff in plastic packaging (YouTube is a great resource to learn).
I'm sure I'll think of more 15 minutes from now...LoL.