Ask

In terms of common consumer products?

Dryer sheets, which are typically made from polymer fibers. Use wool dryer balls instead.

Single-use water bottles - just buy a water bottle.

Ziplock bags for food storage - buy some solid, washable food containers with rubber seals. They'll keep food better for longer.

Also stop using the plastic bags in the produce section at the grocery store - get some reusable produce bags instead. The ones I have are thin mesh that doesn't block the barcode scanner at the checkout. The only produce I don't recommend this for is stuff that is typically wet like lettuce.

Basically try to avoid single-use plastics, many are unrecyclable (soft plastics like bags frequently just end up in landfill) or just dump extra plastic fibers into the environment (like dryer sheets). There are good reusable options for most of them.