Summary: Ring of Kinship teleport to Daemonheim, walk to the hunting spot to the west and start catching the Charming moths. When killed, repeat that process.
Required stats: 88 Hunter and 83 Agility
Required quests: None
Required items: None
Other notes: Hunter is a gathering skill, so a Seren Spirit may spawn when training it, would be awesome if the bot captures those as well. About 225k Hunter xp and 45k Agility xp per hour, and you get some charms as well. This training method is in the wilderness, so you can get pk'ed (never seen a pk'er in the 10 hours I've been doing this legit). Just make sure you won't take any expensive items with you.