Do you know? Because I don't 
Please help me think of something!
It's my 31st next month. I have enough clothes (and just treated myself to a dress to wear in the garden whilst drinking gin/mocktails on my own on the big day
).
I do love gin, but we're TTC so reluctant to ask for an abundance of alcohol in case we are lucky enough to get a BFP next month.
Things I already have which often crop up as recommendations:
I have a Philips Lumea, it's fab when I remember to use it
My hairdryer and straighteners are fine. I was thinking about a babyliss big hair but my hair is pretty big if not straightened so it might not work for me?
I have a Eufy robovac which I love. Lazy cleaning is my style, so as much as it feels wrong to get a cleaning item for my birthday, it is essentially the gift of sitting on my arse, so recommendations of that type welcome!
I was thinking about a kindle but most of my books come from the "bring one take one" shelf at work, or charity shops, so I'm not sure it would get a lot of use. I had a basic one about 8 years ago, which was good for one-handed reading when commuting though...
Last year my best present was a hammock see point above about sitting on arse