The grey one with the hole in it looks pretty cool and I woulda kept it too. The round smooth one looks like a gastrolith and I keep those too. Can we have a closer look of the bottom piece that looks like a pottery shard?
That looks like a shard to me. Also, the one on the bottom right looks like it's been flaked but not sure if it's man flaked or natural. The pink on those two...curious about what type of stone they are. Good luck on finding more and you will find more!