I gifted my 6 year old nephew a cheap hand held analog radio (and a few other things to be fair). He loved it. I guess, it must be fascinating for a child to turn a wheel and then different music and voices are coming out of it. Also it has a frequency scale that's controlled by the wheel which I assume is good for training a technical perspective on controlled action and reaction. The antenna has to be pointed in the right direction. Maybe this gets him interested in why that is. Certainly no clean-up-time at all and play-time probably also decent.