In game notes option

Does anyone else it would think it would be nice to have a small place where you could write notes? I always find myself wishing I had a place to write timers on summoner spells/major cooldowns and just little notes in general for me to remember. The chat window is perfect except for the fact you have to scroll through all of the pings/ chat to find what you are looking for and it ends up being more trouble than it's worth a lot. This isn't a huge thing but I think it could be a nice QoL improvement.