Bet you never expected this! Another example featured on Giddy Upcycled shows an armoire transformed into a big, beautiful birdcage for live birds. Of course, the glass is replaced again with more appropriate cage-like netting. Neat idea if you want to show off your feathery friends in style.
You can never have enough storage in the kitchen. If you lack cabinet space but have just enough room along an area of a wall, an armoire can serve as a wonderful pantry. Check out this great example from Decoholic. Alternatively, you could use the same idea as above, but for coffee instead. Ever Evolving Life 4-5 shows the complete transformation this armoire went through to become a cute little coffee bar.