K.B.
Hi C.,
My nephew did his first communion and his 2 favorite gifts were an engraved bible and an engraved cross that he had asked for to hang in his room - he's older.
With outfits, check out www.janieandjack.com Maybe Jannie. They are a little pricey but they have the cutest stuff. I got my daughter her baptism outfit there, 100% silk.
Other suggested some good things, with a boy though, I wouldn't spend my money with an engraved cross, I doubt he'll ever wear it.
I hope you have a beautiful ceremony!
Amy