I don't demand either, Cid34. What you say about separate paper is what I was getting at earlier. It shows that your birthday is being recognised as your day, the same as if it fell in July.
As for gratitude, this comes up a lot on here. I do think that people should say thank you for a present, regardless of its suitability, but I wouldn't be grateful for a dinosaur onesie, for instance, however much the giver might want me to be, even if she'd knitted it herself out of laceweight yarn or spun gold. I would appreciate the thought (although I would wonder at what made them think I would want one), and absolutely I would thank them for it, but it would never get worn, regardless of how much money had been spent.
Much of the pleasure of presents (giving and receiving) is in knowing that what you've bought is something that shows how well you know the recipient and what they would like. It's not about expecting people to like what you like, or be grateful for the fact that you've bought them 'something' even when it is entirely unsuitable.