This is another drawer in my stamp cabinet. The alphas are adhered to the bottom of the drawer by strips of double-sided tape... five strips in columns running on the bottom, from the top end of the drawer to the bottom.
Then I have them labeled (White Uniball Signo), so I know which letter is which. Same sets are together, until that one ends and another begins.
*Edited to add: Alphas came from Michaels and Jo-ann.