Glass jars, lids, jam jar covers (Loughborough LE11)

I have a box of small glass bottles, jam jars etc. There is an unopened packet of lids and also a packet of jam jar covers and a packet of those metal rings that you can screw onto jars, (see photos). I was going to make kefir I think with them but never got round to it. If anyone who makes preservatives of any kind would like these let me know.