Like the initial as opposed to using name... can also do #4
For the moms (but plural to include sibs)
Cute! $10 for PDF file... print as many as needed
"Chart Yer Course..."
Birthday Boys! (like the captain hat for them... hankerchief for little sibs)
Party Favors (rolled up with a tag)
For the guests to wear!
Pennant to decorate porch area?