So i am looking for items that cant be crafted and are not used in recipes. They can't be placed or worn. Just a bunch of items that could be used on a server for quests. They can be every day items like a shoe or left sock. A lost baseball or box of crayons. Just some stuff that could be given by some npcs that only give stuff by item id rather than NBT data.
This would actually be a very easy mod to create, even if you haven't programmed mods before. If you follow suppergerrie2's tutorials 1, 2 and 3 that should be enough. And once you get it working it is extremely easy to add more. I was able to make my mod just using those tutorials.