These were so bright that they stood out against the autumn colours.
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Lovely shots- look good enough to eat.
The first is a slime mould but too crowded to the the usual ones of this colour. What will it do next?
The second image is an Ascomycete fungus Bisporella citrina. It is common but localised.
Funny you should ask what it did next. This is what it did.
Some nice follow-up images. I think it likely that it is Trichia persimilis, which I found at a later stages and in association with Nostoc, perhaps because of the very wet micro-habitat.
You have shown the stalks, something I failed to do: