8. Keep Cup
If custom design is your thing, and you love the look of the paper coffee cup turned reusable device, the Keep Cup will melt your heart.
They have a series of both BPA/BPS-free Polypropylene cups that are fully customizable in a series of bright and muted colors that you can mix-and-match. They also have different limited edition series with sports teams and band logo designs. They are also fully recyclable if you ever decide to part ways with your mug.
Also available are the Keep Cup Brew, which are glass versions of the cup and come in an 8 ounce and 12 ounce capacity. They also have a limited edition Brew with a cork sleeve and an optional 16 ounce size at this time.
Many coffee and tea drinkers attest that these beverages (and most) taste better when sipped from ceramic or glass instead of paper or styrofoam. There's nothing better than having a portable way to drink out of this superior and reusable material.
Despite being slightly more fragile than the stainless steel variant, the JOCO mug is all about the drinking experience. They are microwave and dishwasher safe for convenience as well.
If you want to customize your JOCO cup, they offer an artist series and a few text phrases so you can declare your interests. JOCO cups come in three standard sizes, 8 ounce, 12 ounce, and 16 ounce, so you can pick the size that works for you.
If you care most about making a statement with your coffee mug, choose these. They are beautiful, botanical, hand painted ceramic travel mugs by Etsy seller Yevgenia Davidoff.
She starts with a solid black or white ceramic mug with a silicone lid and hand paints scenes of nature that are truly unique. Each one is limited edition so you can guarantee that no one will have the same mug as you. They are also dishwasher and microwave safe for convenience.
They are a bit pricier and less practical than the other mugs on this list, but they don't lack in whimsy.
BONUS! Joe Jacket
If wacky and bright and colorful is your thing, then you gotta check out Joe Jacket's wide variety of fun, whimsical designs. There's a wide variety of simple but bright designs available. They are stretchable so will fit 12-20 oz paper cups, sports bottles, or mason jars. They insulate not just heat, but also keep in the moisture, and they are also environmentally friendly!