Essential prenatal things I should buy?

Hello, I want to buy a pregnancy pillow because I have started trying to sleep on my side an I’m super uncomfortable. Someone recommended one here on the app and I found it on amazon. I also searched for it here in my country and the price is almost 4 times more expensive, so I want to order it from amazon. Shipping costs will be high (but even then cheaper than buying the pillow here) so I would like to add some other things to the order. I know I will add one of those elastic bands so I can keep wearing my regular clothes that I can’t button anymore. Is there anything you think I should buy? Also, if you have another great pillow recommendation please let me know. I’m 16 weeks today. Thank you in advance for your help 😊!