A sampling is listed here. They are divided into groups, but a creative approach to problem-solving may take you to examine areas other than your own.
Projects that monitor activities of a great variety of animals.
Discriminating Detectors and Calibration Systems
Very high SNR and discrimination lead to great sensitivity.
Precision Device Control
Experimental control is necessary in many experiments.
Designing and building teaching lab instrumentation; teaching electronics and lab computing.
Amplifiers, Sensors and Test Systems
Matching a phenomenon or a sensor to the data acquisition equipment.
Communications for Experiments
Across the bench or across the world.
Equipment for Harsh Environments and Remote Power Systems
In polar, desert, and high pressure environments.