what is your favourite thin that you have invented

Question: what is your favourite thin that you have invented
- Keywords:
  achievement,
  discovery,
  invention
Asked by anon-294516 to Dhruti on 28 May 2021.
- Dhruti Devshi answered on 28 May 2021:
  
  I have not invented anything (yet). Inventions in science nowadays are usually but a collaboration between different research groups (science is definitely one huge team effort) so not one person gets all the credit!

Question: what is your favourite thin that you have invented