For example, they used to provide these excellent "Ultra" lids for their products to replace the terrible plastic lids that constantly break and crack. But, they have slowly been phasing them out and only have a few sizes remaining: https://corelle.com/products/pyrex-r-ultimate-white-lid-for-...
We have stainless steel containers that we use too but those are obviously more annoying because they can't be microwaved at an office/school/etc.
It is really a head scratcher that it is so hard to find quality food storage in 2025.