Actually being able to do data work instead of just shadowing. Even though this internship didn't correlate with my major, I really think it would be essential for anyone interested in data entry or electrical engineering planning.
What I wish was different
More sense of community - you're typically left alone to do your own task and only have a group discussions ever so often.
Take every opportunity given! Make the most of your time and always ask for help when you're doing tasks, especially at this firm since we dealt with a lot of large clients.