This is my first time to comment here! I’m 22 weeks pregnant with my second. I agree with the gift ideas 7720-12 suggested. My husband actually got me a pregnancy pillow when we were expecting our first and I love it. A gift certificate for a pedicure would also be nice. Gets harder to reach your toes as you go along and everyone see your feet when you deliver. I do think maternity yoga pants would be a good idea though. I’d love it if my hubby got me some bc I just want to be comfortable when I’m pregnant. I personally was looking at these after reading the reviews:

Liu & Qu Maternity Women's Casual Pants Stretchy Comfortable Lounge Pants https://www.amazon.com/dp/B07JML5PPV ref=cm_sw_r_cp_api_i_AZq9DbRXD7WXJ

Foucome Under Belly Maternity Pants for Women,Comfy Stretch Pull-on Work Out Leggings with Pockets Medium,Black https://www.amazon.com/dp/B07PY3JQ1R/ref=cm_sw_r_cp_api_i_T1q9DbDR32W3H

A friend that just had her second also recommended Blanqi maternity tights.

You can’t go wrong with anything that makes her feel pampered though. Oh, my husband also got me ‘What to Expect the First Year’ with our first and I’m reading ‘What to Expect When You’re Expecting’ this time around. Some good information if she likes to read. Sorry so long a comment! Congratulations to you both!