This is why you always take a Sharpie (or the Rub-A-Dub version for clothes - slightly different ink), a Brother P-Touch or Dymo labelmaker, paper mailing 'return address' stickers, or those good ol' summer camp iron-on nametags... and mark all your electronics, clothes, jackets and other items before you go on vacation. That goes for components that can become seperated, too, like spare batteries and covers/cases. Mark it now.
And during your journeys mark stuff as you acquire it and as you remember to. Bringing a Sharpie and some return-address stickers along is easy enough to do.
If they find a lost item and have a name (and address or phone number) to work with, Disney will make more than a reasonable effort (sometimes bordering on heroic) to get you reunited with your lost 'stuff'.
--<< Bruce >>--