Baby shower thank you gifts?

How common is it to get thank you gifts for those that hosted your shower? We didn’t get many of the big items on our registry, which is fine, but now I have to purchase it leaving me a little less cash than I thought. I had intended to get the four people who put together my shower gifts but looking at my budget I don’t know how. 😩 the shower was perfect and I loved it so much. Is a gift necessary? Or any ideas on something cheap I could get?