Waterproof Bluetooth speaker (if they exist? I haven't looked yet) I like music in the shower.
Weighted vest for exercising.
Baseball hat.
Wedding rings (we were burgled :/ )
Dark chocolate anything (80% or higher)
Slinky undies.
Lego galaxy.
Book of hiking trails in the Pyrenees.
Book on the Camino Santiago routes.
Compass.
I don't usually have any ideas! I may buy half of it myself, or with money sent to me (I'm abroad, I get bank transfers in lieu of gifts).
Kids are getting older, so their lists are shorter but more expensive!
DH has an empty list, as usual. I may just tie a ribbon round my boobs and gift him what he got last year, and the year before that......