Depending on where you live, this may be the start of your plastic-free/no-waste journey. (You'd obviously need a place where you can shop plastic-free somewhere near you )
One possibility is that, any of these jars that were vacuum sealed in the first place, they can easily be re-vacuum sealed with a cheap vacuum chamber/hand pump combo. it's not an appropriate preservation method for all the kinds of things that originally came in the jars, but will keep dry goods from oxidizing/etc.
Nice collecion you have there! Just got my hand on a large cardbox worth of jars. Almost all of them have caps as well. My plan is to slowly clean and fill them up, just like you did!
Also I recently found out (by a foodwaste prevention program) that I have plastic-free shop not too far away from me.