If I can't buy stuff in glass I'll often relocate to glass jars at home.

I keep all my glass jars and tops .. whether Mason or not. Wash them real good. Even strip the labels off when I've time.

Always store stuff in glass as much as possible.

When I open a can of diced tomatoes and only use some I'll relocate to glass and keep in fridge .. etc

Never done the strawberries in jars though. I'll have to give it a try though I generally freeze my fruit for storage.