Ziplock/Grip Seal/Press Seal Bags (Harrogate HG1)

Does anyone have any spare very small ziplock bags, please? They seem to be known by various names, including grip seal bags or press seal bags.

I am sorting out a huge family button collection into sets. There are a lot of matching sets, so it is worthwhile. I have run out of little zip-lock bags. I saved a lot from covid testing kits. Three very kind freeglers have helped me out with a lot more, but I've run out again!

Thanks in advance....
Ruth