Note - I haven't actually tested it, but here are your Spaghetti O's. Let me know if you have any problems with it. The file is on my mod requests page here:
I did not create the different types of Spaghetti O's. I figured you could do that part yourself in the GECK.
The mesh is in \data\meshes\SpaghettiOs and the dds texture is in \data\textures\SpaghettiOs. The files are canspaghettios.dds and canspaghettios.nif.
The form ID is under ingestibles and it is named SpaghettiOs. There is a quest called SpaghettiOsQuest which adds the Spaghetti O's to various food leveled lists. The script is called SpaghettiOsQuestScript. You can modify those as desired and can place the Spaghetti Os wherever you want in the FNV world.
Again, if you have any issues, let me know. I did this pretty quickly and did not take the time to test it.