When in an interview, it is important to understand what the questions you are asked really mean. Many common questions have hidden meaning or are trying to uncover some information that might not be apparent. If you can recognize this, your answers will be stronger.
If you are asked to give examples of ideas you’ve previously implemented, they are not necessarily interested in the ideas themselves. Instead, the interviewer wants to know if you are an employee that thinks independently and is trying to improve efficiency. Focus on this and really emphasize that you are such an employee.
Points to Emphasize
Remember that interviewers are concerned with how their company will benefit. You should try to demonstrate the advantages they would enjoy if they hired you.
Mistakes You Should Avoid
In addition to understanding what they are really asking, you should understand what they are not looking for. Try to avoid these bad topics when answering.
Your example of ideas you have implemented should probably look something like this:
At my previous work, I had the idea to dedicate a few hours on Fridays to reviewing our efficiency. Our workload was lighter on Fridays anyway, so we were able to spend some time improving our work. I also implemented a secret shopper program, which is still in practice. I was very interested in improving accountability.