A glass blower owns you a debt
https://media.giphy.com/media/X9asmGWeNGbT2/giphy.gif a debt has to be paid right? What kind of glass gift should the glass blower make for you? A glass statue of yourself? A glass league of legends champ a glass giant %$#%$# monster?
(The glass can always be enchanted for a price) mehehehehehehehehehehe