Adrianne is loving the work of Paige Poppe. If you're into cacti, you're going to love it too!
Sally recommended checking out Michelle Mackintosh's book Snail Mail: Rediscovering the Art and Craft of Handmade Correspondence. Such a beautiful book and so many fun ideas of things to send in the post!
You can find out more about Adrianne and her work on Instagram @adriennekari and on her website at www.adriannekari.com
Adrianne's advice: Start with something simple and that you are really interested in. You might not be able to give a lot of time to it every day and you might not be pleased with what you are making to start off with.