I don't know of any others off the top of my head, but I'm sure there are some. BTW, I've used Memories by Betsy before (and Memories by Sarah before that, but Sarah movied) -- I was very, very pleased with Betsy. In fact, I'm working with her right now to put together a welcome back gift for each of my daughters and a welcome basket for my parents.
It has been MUCH easier to design the gifts for my daughters -- a new Disney baseball cap for each of them, another pin lanyard (theirs are full) and set of trading pins, and a few other little items. I might pick up a few things there to send to her to include, as well.
My problem is what to put in my parents' basket. She used to be able to include food items in the basket, so I was going to use a lot of that but she can't do that anymore (turns out it has always been against the rules, just didn't know it). So I'm trying to come up with a few ideas myself!
I would browse her website and the Disney Florist website, as well as some of the online Disney shops to get some ideas. I might ask her to find some Disney golf balls for my Dad since he loves to play golf, and a Disney cookbook for my Mom (she loves to cook and I've fixed several Disney recipes for her), and maybe a water bottle strap for each of them. Still need to come up with a couple more ideas.
Maybe a picture frame and then they could put a favorite picture from their trip in it when they get home? Do they wear hats? If so, maybe a nice Disney cap or hat (there are some cute ones). What are their interests and hobbies? Maybe you can find some Disney items along those lines.