by P.P.S. I don’t know what "present I want". If I need something, I will just go and buy it. And write down the exact instructions - on my doctor you will go there, buy something, while checking something and ask something... charm in the hallway, is it?
P*S Your mistake is that you overwhelm "which I want" first on "I need something". What you want may not be much needed, and in the usual time you will be foolish about money and time. Thus e. Ask to buy some shit, which has been licked for a long time, but did not decide.