Gender predictions

What are some fun gender prediction things I can do (obviously just for fun as I know that's all they are). I just wanna do a few. I'm really early so I have a while before I find out for sure what I'll be having, I'm just wanting something fun to do in the meantime, plus like with my son I like to make a list of all the results and then when I find out what I'm having, I'll look back and see what gender had the most points and if it was right or not. I've done Chinese predictor thing and ring on a string already. What else is there that doesn't require me peeing and making mixtures with my pee Haha!!