Moms with older boys

Ashlee • Mrs. Watts 💍 7/29/17 👧🏼 5/3/13 👼🏼4/1/17 My 🌈 👶🏼 3/6/19

So I am a SAHM and I want to try to make my family some extra money by getting into crafts. Lately I have seen girls get into mermaids and unicorns more, what is the equivalent for boys?

I'm currently pregnant with a little boy but I have a 5 year old daughter and I don't know much about likes.