Electrical Engineering: How to strengthen your profile

<p>Hi all,</p>

<p>i am a Electrical Engineering sophomore, going into my junior year. I have a few questions regarding summer projects etc.
I want to eventually apply for masters program at top engineering universities and want to know ways in which i can strengthen my CV to be considered a good candidate at these programs.
My gpa is around 3.4 currently and i have heard graduate schools rarely look at applicants below 3.7. I want to do something useful this summer to make up for my average gpa. Any ideas or projects that i can do on my own during the summer ?
I have taken programming courses and basic circuits and digital logic courses.
I have worked with microcontrollers as well.</p>

<p>Any help will be appreciated !</p>