I am studying the design of radio engineering devices, what topic to choose for a diploma?

Question

Electronics

I am studying for the specialty design, repair and maintenance of radio engineering devices, although the defense of the diploma is not soon, but I want to finish it faster so as not to create intrigue, and so I ran into a creative crisis.
You need to choose a topic for your thesis, but there is no clear framework, it must be an electronic device, and the theme of the thesis should not be repeated for five years.
That's all the restrictions.
With such a framework, a creative crisis appeared, I don’t know what to take on. Therefore, to clarify, I made one more condition: I will produce the device and, moreover, change it to a diploma, so it should not be too expensive.
Throw ideas or at least directions.

Answer 1

If you do not just "sit on the priest", but do business, then there will never be any creative crisis. If you do something (work), then there will always be practical complex tasks, the solution of which will require some kind of device, which either does not exist in nature, or analogues will be expensive. Accordingly, the way out is to take and design a device that will be 100 times cheaper than analogues, or with extended functionality, or something else.
For example ... A device that can be connected to a refrigeration (or a motorcycle, or a guitar, or a car, or a computer - depending on what you are fond of) installation and which would record the facts of turning the installation on and off, switching modes, failures, or some other These are the events to be recorded and not recorded by the device itself. + For example, sending you reports via wifi. Everything.
ps the option with a refrigeration unit is not taken out of my head, this is a real working device that we implemented and used. a serious and necessary thing, in theory it can even be turned into a commercial product - refrigerators really need such a device ...

Answer 2

invent induction charging of electric vehicles, this is the future, I guarantee

Answer 3

This can not be to create a non-repeating device! Everything is already done. However, it is possible for some parameter to differ from analogues. At one time I came across your problem, and also decided to come up with a topic in advance. The topic is interesting to me personally. But I'm a radio amateur - it's easier for me, because we have a whole unplowed field. He invented a two-way pager for exchanging text messages directly between devices (independence from cellular or other infrastructure, in some remote corner of the planet).