Aside from combining items for quests and side quests, are there any items you can combine to make potions, food, weapons, et cetera? I remember obtaining anvils and glass bottles from enemies, but I have no idea what they are for. Any ideas?
I don't know of any thing you can combine to make the weapons and food.
I did find that you can use the anvil to make the cherries fall down off the tree (see this GameSpot forum post for details).
From what I've seen, nobody's been able to figure out what to do with the glass bottles.