Sister gift?

Cara • Baby boy due May 30th, 2017!
My sister has gone above and beyond for me since I became pregnant. She has 3 kids in diapers herself, and she STILL does everything she can for me. She has planned my whole baby shower and made it exactly how I imagined it. She took me to NYC for a mom convention. She bought me my first batch of cloth diapers (20$ a piece) for my baby. Shes also giving me a TON of hand-me-downs from her 3 babies. I want to thank her somehow. I am 32 weeks pregnant. My SO just lost his job that was supporting us, and allowing me to be a SAHM comfortably. So right now I dont have much to give... We are struggling, but I have a little bit of money saved up of my own from when I was working. I want to do something meaningful for her. Any ideas of what I can do to thank her? Please help.