They are the Royal Canadian Mounted Police and are the equivalent of the Federal Investigation Bureau in the U.S.
Firstly, don't knock light bulbs and batteries as they teach the basic concepts of series, parallel, and series-parallel circuits and digital logic (AND, OR, NOR, etc), secondly for $5 dollars you won't be doing much with modern electronics as they require FPGAs, ASICs, DSPs, etc. A silicon diode has a 1V/degree celsius response and as such makes a handy temperature gauge. I have used this as a college lab where students take a temperature reading, apply heat and then take a reading with the diode thermometer and calculate the change in temperature. This helps the students understand the role of components as well as the effect of temperature on electronic components.