Gifts...HELP...Opinion Please!

I know I dont post a lot on here (life is crazy right now), but when I get a chance, I do know that you ladies are extremely helpful!

Here's my issue...I dont want to get my girls DOJ bc every girl is wearing a different dress and every girl has a different personal style so I dont want to get them jewelery that they won't wear after the wedding. What I am doing, since we're getting married in the summer is putting together a 'beach' themed bag...I got them beach towels and water bottles, but I dont know of what else to get them. I dont want to get sandals bc I dont know their sizes...

Any suggestions? OH, i also got them picture frames for a pic of the girl and myself at the wedding and I'm putting together an 'emergency kit' for each of them, but I do want to get them more with the beach theme...

TIA!!

I would totally email them all and get their shoe sizes to be able to put flip flops in the bag... just don't tell them why you're asking.

Sunscreen

Maybe a magazine subscription for each girl to like, Cosmo or Glamour or Redbook or Shape.. that's what I always read at the beach

Or a B&N giftcard or a book you know they'd like? Some kinda chicklit... or the first of the Nora Roberts Wedding quartet books to keep it wedding related..

Gift Certificate for a Pedi is cute....or how about a cute spray bottle for when its hot on the beach....cute BM tanks? a cute small wallet that matches the beach bag? I am thinking of doing the same thing for my girls since we are going away for the BParty