If someone helps me out, via opening a lockbox or crafting something, I usually like to throw a little coin their way. Now in some cases, such as the crafting of high end armor and weapons, or expensive enchants, I am usually paying extra beyond just the materials, and that extra is good enough in my opinion. If I pay 15 gold plus mats for a crafted item, I would expect that 15 gold is the tip.
And now that I think about it, tipping the rogue who is leveling up his lockpicking, or a low level enchanter looking to skill up on an enchant that you provide the materials for...that is kind of silly. I mean, by providing the mats, and having them make it, you are in a sense helping them out. So should you also be on the hook for a little extra? I usually do pay a little, but I have no idea if everyone else does or not.
So, my question for you guys...do you tip? If so, how much and when?