If he is like me most guys don't want really expensive gifts from their girlfriends they buy really expensive gifts for their girlfriends :). My girlfriend last year gave me a card with her picture inside with this little note "I won't get into details of note" and it was the best Christmas present I ever had :)
A female condom.
A good 19th birthday present for your 2-year boyfriend would be a fancy smartphone.
depends if they like you.
a werewolf girlfriend or boyfriend
tell himthat you want to have sex with him
smile by uncle cracker.
make somthing
To be sexual to your boyfriend you must make him feel sexual. Kissing is a start, then touching and stroking is good too. Work you way downwards, then stroke around that area too, and just keep touching, making him feel good, and you will too. Other ways are noises, or deep breathing to show him excitement or that you feel sexual. Maybe let him touch you too, then that's sexual.
It depends on the kid.
tickets to his favorite band/sport team
As long as you are free from any sexual infections or diseases, it is good that you kiss your boyfriend after he licks you out. Assuming that you or your boyfriend do not mind the after taste, it shows comfort and confidence with each other.
A card or a day out with each other.
Yes. You van have a boyfriend but no sexual involvement.