General

I think the SARCO GUS sweets give exp (Useable up to 10 times a day)

ghost candy turn ur char into a ghost but you can walk and move. Pretty fun and funny when u use it and go walking around maps with peoples xD

Romantic Phantom: Eye acc.
Hair Raising Halloween: I think it's a sub title (over your head)
Ghost candy: I believe this one is for giving out 5 Boo buddy candies?
Sarcopagus sweets: And this one is for using 5 candies?

Romantic Phantom is an eye accessory. Hair-raising Halloween is a buff that gives you att. I think ghost candy transforms you into a ghost. Not sure about the last one.