Quote Originally Posted by BW022 View Post
Even making material components is pretty limited as it only lasts an hour or as soon as you use it again. Material components (even if you don't have an arcane focus) are pretty much free, so cost savings and weight aren't critical.
One of the uses I had thought of before was to create arbitrarily-expensive diamonds and other material components, to allow for free resurrections, shapechanges, and other such spells.