If you're a coffee lover (or any hot beverage lover for that matter) you need to get your hands on these one-of-a-kind coffee mugs. The heat from the coffee warms the mug and changes the outside design. Whether you're left with a bloody crime scene or a disappearing cat, there's a heat activated coffee mug that will warm your heart. Our personal favorites are the Harry Potter-inspired heat activated mugs! "Mug"gles sure do love their coffee.
This Batman mug that lets everyone know who the real super hero is.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_640493977-9.jpg?resize=1000%2C648&ssl=1)
Don’t worry, Batman is here to save your dreadful sleepy eyes.
This “Harry Potter” mug that spills your secrets.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_242640412-9.jpg?resize=1000%2C667&ssl=1)
“Mischief managed.”
This gas tank coffee cup.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_1674467302-7.jpg?resize=1000%2C667&ssl=1)
Because running on E is about as far as we get before our morning coffee.
This mysterious “Alice in Wonderland” coffee mug.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_373830868-11.jpg?resize=1000%2C667&ssl=1)
Watch the Cheshire Cat disappear before your eyes to nothing but that creepy grin.
This humorous Jesus coffee mug.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_242640412-9.jpg?resize=1000%2C667&ssl=1)
Jesus not only saves, but apparently he shaves when heat activated too.
This mug that brings out the sharks.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_373830868-11.jpg?resize=1000%2C667&ssl=1)
What a perfect way to celebrate shark week!
This cup that recharges you.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_1093244594-4.jpg?resize=1000%2C683&ssl=1)
From low battery, to completely functional.
This mug that plays a game of tetris for you.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_1674467302-7.jpg?resize=1000%2C667&ssl=1)
How cool is that?!
This cup that pretty much sums up our mornings.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_242640412-9.jpg?resize=1000%2C667&ssl=1)
We only hope that eventually we’ll be able to open our eyes.
This coffee mug that blossoms.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_1054375334-7.jpg?resize=1000%2C667&ssl=1)
Just add some coffee and a beautiful tree blossoms with bright pink flowers.
This prehistoric coffee mug.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_408002557-12.jpg?resize=1000%2C667&ssl=1)
Watch this T-Rex turn into the fossils we see today as your coffee warms the mug.
This cup that’s out of this world.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_1722926815-6.jpg?resize=1000%2C667&ssl=1)
As you pour your morning joe into this mug, the constellations begin to appear.
This mysterious “Harry Potter” mug.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_1562611978-5.jpg?resize=1000%2C617&ssl=1)
With the addition of hot coffee, you can secretly see foot prints begin to appear.
This cup that goes from droopy to wide-eyed.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_242640412-9.jpg?resize=1000%2C667&ssl=1)
We’re pretty sure our eyes still look droopy after only one cup of coffee. Give us about 5 and we’ll be wide-eyed.
This “It’s Always Sunny In Philadelphia” inspired coffee mug.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_373830868-11.jpg?resize=1000%2C667&ssl=1)
Dennis’s shirt just falls right off as the cup gets hotter.
This coffee mug that turns from a zombie to a smile.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_1562611978-5.jpg?resize=1000%2C617&ssl=1)
‘Cause if you have a smile on your face before a cup of coffee, then you must have magical powers.
This coffee cup for the “Dexter” loving fans.
![](https://i0.wp.com/upload.oola.com/rola/uploads/2021/12/shutterstock_640493977-9.jpg?resize=1000%2C648&ssl=1)
You can show off your true love of crime scenes as this “Dexter” mug turns from black to a blood bath in a matter of seconds.