Latimeria

This isn't Narceus americanus, but rather a millipede in the family Xystodesmidae. It's quite pretty too, I haven't seen one like this.

A species in the genus Pseudopolydesmus, one of the most common genera in the eastern US!

This is a species in the genus Auturus. They're almost always found in rotting logs. Fluoresce under UV light too.

Pseudopolydesmus sp., probably P. canadensis.

You've got the right family, but I think this one is Apheloria tigana. Unfortunately, we can't say for sure without examining a male specimen.

This is certainly a Xystodesmid, but may be Sigmoria trimaculata instead. I'm working on a guide to Ohio's millipedes, and if you can find and collect any other species like this or give me anymore info on where you found this one and what the habitat was like, I'd greatly appreciate it!

This is a species in the genus Pseudopolydesmus. Eurymerodesmus is smoother and is orange with purple-black.

Looks like a millipede in the family Parajulidae, but can't be identified further without examining the specimen. Thanks for the submission!

This is a male in the tribe Aniulini. Unfortunately, I can't ID it any further without seeing the gonopods (sexual structures), which can be seen on the 7th segment in your photo--they replace the legs.

Not sure about the tree, but the insects look to be nymphs of the family Pyrrhocoridae or Lygaeidae, but I can't say for sure.