DM ore Drogerie Markt is like your typical Walgreens or CVS. This is a great place to get tea, make up, diapers, lotions, emergency items, toiletries (including travel size) and more.
You can also get photos developed here. If you use the red machine the photos will be made in a lab and are much cheaper, but you will need to come back to pick them up. If you use the yellow Kodak machines, they are a bit expensive, but you have them within a few minutes as they print at the machine.
DM usually has a few recycle boxes at the front of their stores for batteries and CFL or LED lightbulbs.