I have, twice that I can remember.
- Nukamajig - microwave. I still use it from time to time because it’s too stupid not to.
- Miscombobulate - mixup and confuse. Just now, between the time it was and when the appartment building’s laundry room was closed for the night.


Discombobulator
I am sad to report that this is already a word. My condolences.
https://www.youtube.com/watch?v=B62ACxuq8Pw