Sometimes people just don't see what is, in our eyes, obvious.
I have dropped a million and one hints to DP about what I want for xmas and he was moaning that I'm hard to buy for!
How hard is it to realise that everytime your partner does her hair she says 'I wish I had some really good wet-to-dry straighteners, it takes forver to dry and straighten my hair'
Seriously I've said it about twenty times, I've also told him goodness knows how many times, when he asked what his dad should get his mum, 'Jewellery, something nice, and classy, that can be worn often, diamonds and gold are a good bet, I know if you bought me that I'd be over the moon, and I bet your mum would too'
BUT he still doesn't get it.
Then he tells me he wants tools for xmas and I laughed.
But like he said, tools for him are what he needs to be able to play about with his car properly, it's something he loves to do, so IMO, only get something that isn't particulary 'gifty' if it is related to theur favourite hobby, so for some, cookbooks would be acceptable, whereas for others, a definite no-no.
I'd eitehr tell him I want a meal outright, or say 'Oh, cousin has offered to babysit for us for my bday, we could go out somewhere nice, I'll leave it to you to arrange me something special, I'd love a surprise' then leave the yellow pages open strategically and this page open on the PC, etc.
Failing that, how old are the children?? My 7year old is perfect for getting gift ideas to Daddy without him realising. I'm going to have to tell her the type of watch I want, he keeps asking me about one on an advert which I detest, so just incase, I'll show her one I like instead.