I agree! My smartphone long ago replaced pretty much my whole purse: GPS, notebook, book, contact book, calendar, phone, iPod, ruler (I'm a knitter - I use it for gauge and when to move on to the next section), laptop, mirror, radio, etc. I even have access to all my home files via a virtual server, so I have access to important documents, and with apps for certain banks/insurance companies/stores/etc. I don't have to have my payment, medical, or ID cards to hand.
I'm assuming we're not talking household appliances, but small, portable preps that could be charged with one of those little solar chargers? Everything from power tools (I <3 my cordless drill as it is so versatile) to stoves to washers and dryers can be considered gadgets otherwise.
Hmm... I'll have to ponder that one.