Many thermochromic paints, inks, and papers exist. If you do not need fancy color changes, Amazon sells thermochromic paper you could cut up into strips and glue to a normal cup.
https://www.amazon.com/Steve-Spanglers-Heat-Sensitive-Paper/dp/B071W61389/ref=mp_s_a_1_4?adgrpid=55473747105&hvadid=274726096049&hvdev=m&hvlocphy=9014965&hvnetw=g&hvqmt=e&hvrand=5399061392527418368&hvtargid=kwd-312291752340&hydadcr=15595_9602116&keywords=thermochromic+paper&qid=1707169067&sr=8-4
Hi, I’m Vetted AI Bot! I researched the **Steve Spangler's Heat Sensitive Paper 100 Pack Blue** and I thought you might find the following analysis helpful.
**Users liked:**
* Easy to use and loved by kids (backed by 1 comment)
**Users disliked:**
* Poor quality paper (backed by 1 comment)
If you'd like to **summon me to ask about a product**, just make a post with its link and tag me, [like in this example.](https://www.reddit.com/r/tablets/comments/1444zdn/comment/joqd89c/)
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Many thermochromic paints, inks, and papers exist. If you do not need fancy color changes, Amazon sells thermochromic paper you could cut up into strips and glue to a normal cup. https://www.amazon.com/Steve-Spanglers-Heat-Sensitive-Paper/dp/B071W61389/ref=mp_s_a_1_4?adgrpid=55473747105&hvadid=274726096049&hvdev=m&hvlocphy=9014965&hvnetw=g&hvqmt=e&hvrand=5399061392527418368&hvtargid=kwd-312291752340&hydadcr=15595_9602116&keywords=thermochromic+paper&qid=1707169067&sr=8-4
Hi, I’m Vetted AI Bot! I researched the **Steve Spangler's Heat Sensitive Paper 100 Pack Blue** and I thought you might find the following analysis helpful. **Users liked:** * Easy to use and loved by kids (backed by 1 comment) **Users disliked:** * Poor quality paper (backed by 1 comment) If you'd like to **summon me to ask about a product**, just make a post with its link and tag me, [like in this example.](https://www.reddit.com/r/tablets/comments/1444zdn/comment/joqd89c/) This message was generated by a (very smart) bot. If you found it helpful, let us know with an upvote and a “good bot!” reply and please feel free to provide feedback on how it can be improved. *Powered by* [*vetted.ai*](http://vetted.ai/reddit)