Here are some on line sources for you.
Meme: These might do the trick!
cork---here is place that sells them they come in many sizes you'll have to figure out size to fit https://www.widgetco.com/36-large-cork-stoppers-bungs here are some more---- https://www.etsy.com/listing/681895351/cork-weck-jar-lids-cork-lid-canning-lid?gpla=1&gao=1&&utm_source=google&utm_medium=cpc&utm_campaign=shopping_us_e-home_and_living-kitchen_and_dining-kitchen_storage-jars_and_containers-other&utm_custom1=73d9b294-ab22-4f79-b1a8-6fbbdfafdae5&utm_content=go_1844702805_75381304251_346364748126_pla-305107673187_c__681895351&gclid=EAIaIQobChMI2sfh0dD94gIVgsVkCh0R1wr0EAQYAiABEgLWsfD_BwE here are plastic lids that fit https://www.ouibyyoplait.com/lids/
Amazon has lots of choices. https://amzn.to/2Ji2sPh
You obviously have a repurposing idea for these little jars. If you don't mind sharing, I would love to know what you plan to do.
Hi I am sorry I am late in answering your question. I plan on using the jars for smidgens of food - dried rice, panko bread crumbs, macaroni, stuff I have just a little of leftover in the box or bag.