All suggestions welcome.

I suspect she has a high pain threshold so dont be churlish about putting forward extreme ideas.

Say it with flowers – buy her a Triffid*

*younger forumites might want to ask an grown up!

Grandchild?

phinbob.
splutter…… got those already and not yet 50.

Perfume?

Sexy underwear? I bet she'll never tell anyone and avoid you at all costs in the future.

Hitman?

Subscription to Dignitas?

40mpg.

Taking things to a new level with that one.

A few years ago, I was in charge of getting the outlaws pressie – as the wife was in hospital

So, I got them each a hand-knitted pullover with their name on the front of it
I managed to keep a straight face OK on Christmas morning & got them to wear them when we went into hospital to visit her 😀
The wife's face when they took their coats off was a picture.

http://www.amazon.co.uk/Very-Best-Jake-Thackray/dp/B00008NV5K

New head for her broom 😆

a rabbit 😉

A nice, solid metal chair.

Fitted with a plug.

a little signature on what her daughter has bought her's gift tag 😉

How about My mother-in-law so you can have a matching pair, I'll even pay for the postage ,the wizzen old croan !!!!!!!!

Rampant Rabbit.