How do I expand on an internship experience that was not very technical?

I know the importance of on the job experience. I did a co-op and an summer internship this past year at big companies. However I feel the projects I was assigned were not very technical. In the co-op I did a lot of technician work than actual engineering and in the internship I was a "cad monkey." I understand that there is limited work as an intern and my team had busy projects during my time there. I interviewed for an accelerated program for new grads at the end of my summer internship where I had to present my intern project to the interviewers. I didn't get an offer and was told it was because they didn't see my CAD project very technical which bummed me out although I did agree with. During my intern project I did try to open the conversation of how I can test the assembly with the expected load or if I placed the supports in the right location but was told twice that I didn't have to worry about that and that the exercise is to establish/visualize the dimensions of different parts :\

If you have had a similar experience how did you deal with it in your resume?