Everyone should have an enamel mug to drink tea from. They're great for drinking hot toddies out of in Winter. I've even seen people make cakes in them (if you can be bothered doing that). And you'll also feel like you're on a fun campring trip, instead of being at home doing boring admin.
 
+350ml.
+ Gun Metal Grey.
+ Dishwasher safe.
+ May chip if you drop it, but that adds to the 1920's vibe.