Undergraduates have ample, rich and varied opportunities for doing real research in labs alongside graduate students and faculty in the EECS department. This means that papers are being published with undergraduates' names on them. Students are doing research projects that result in conference papers being accepted, thus the cost of travel to conferences can be paid. Undergraduates are finding out first hand what life as a graduate student is like.
REU Supplement funding is available specifically for undergraduate researchers, and Primary Investigators routinely ask for this funding on National Science Foundation proposals.