What should i buy

I honestly don't know what to buy, i only have $40 but i know it can get some stuff and it might just be smart to save my money, but any suggestions? ill list everything i have below just so people know generally what i could do better on & what would be good to have. ( i know the sm's i have and all aren't the best, im new to all of this )

my current sm's & gt -
Twitter - @trots
instagram- @enchants
xbl gamertag - abductioning
kik - webmails

I have a cool gamername in that price range

Buy one of my vulgar tags, they're sexy.

Vine: Wii

I'll do it you for $10