What should I get my sister?

[lifesaver]

my sister (who I am very close to) is about 21 weeks pregnant with her first child. Her and her husband (A brother of mine - I introduced them) had a really hard time geting pregnant (my sister did the whole lupron shots thing, and had/s endo). We never really thought she'd be able to get pregnant. She miscarried once, butr is doing great now. I want to do something REALLY cool for her to commemorate her pregnancy. Maybe do something for the baby, write it a short book about its parents, or make something that I can give my sister that the baby can have when it is older so it will know how much it was wanted and loved. I am stumped for ideas. my sister is always giving me smack about how creative I am, but I am stumped on this one. Have ya'll ever heard of anything cool?