For your young Bridesmaid, I saw a beautiful thing on Etsy - it's a Disney charm to hang on their flowers, with a message about being something old for their wedding day. Great price too!
For my bridesmaids, I'm going to make them some jewellery to wear on the day, and probably put together a goody bag of treats.
Not sure what the boys are getting yet - leaving that to the fiance!
Mums will be getting bunches of flowers, presented during the speeches (going to present the other gifts in the morning when getting ready).
Not sure about Dads - we only have my chap's Dad and stepdad to worry about, so again, I'll probably leave it to him.