The words that came to my mind first when I thought about words that begin with そ were そーめん/somen and ぞうさん/zousan.
Somen is a summer staple in Japan! I start craving these cold noodles as soon as the weather gets above 80 degrees. They are delicious, easy, a big hit with kids, and refreshing on a hot summer day. The basic ingredients you need are somen noodles and dipping sauce. Then you can add your favorite toppings, such as:
chopped green onions
grated daikon radish
Check out this page by oisiso.com for inspiration
There’s also something called nagashi-somen, which translates to flowing-somen. Somen is sent down on a “waterslide” made out of bamboo trees while people sit on either side and pick up the flowing noodles with their chopsticks. Not sure how sanitary this is, but it looks fun! You can buy an electric somen machine for your home too
Did you know that elephants say “Pao~／パオ〜” in Japanese? Cute.
Here is an elephant coloring page, and video+lyrics of the famous zousan song: