How to connect multitple laptops to a single speaker system

Hello. We make music with children in open spaces (parks etc.). I am looking for a solution to make it possible to connect multiple laptops to a single PA. The most obvious is to connect to a mixer from the laptop outputs, no interface or anything just go from laptop jack to mixer in. Is this what you would go for? Any ideas?
Thank you

I sometimes use a couple of 5 m “6.3 mm stereo jack to 3.5 mm stereo jack” like pro snake 20033-5,0 – Thomann Danmark
but be aware that the minijack connection to the labtop might not connect, because of the casing around the audio input of the laptop , so it should be tested before use.