This is really late, because applications are due Friday, but you can bookmark this for next year:
ONR SEAP, $3300 stipend, STEM research, only in some states
https://seap.asee.org/
The application for this one opens later in the year:
Army SEAP, $2000 stipend, STEM research, only in some states
http://www.usaeop.com/programs/apprenticeships/seap/