Something I feel every player should try do..

Honestly it's just good team etiquette to go look out for invades in the first minute and a half. Technically we only need one person doing so but the more people that are aware of doing this the better.

I only really tend to play support and jungle nowadays (still mainly support) and let's say if I start bottom side, I feel like people should try go and ward the single brush in the botside river ASAP. The earlier the better since the earlier you have vision on it the better, I've been doing this for a while and many times I've bet the enemy team to warding that brush. As a result they don't really know my team could see them. Once the brush is warded we should cover the 2nd route of invading which is the bottom tri-brush, since people invade from there less, it's relatively safer to facecheck and sit there. Likewise if you start topside, ward brush ASAP with trinket and go to the botside river entrance to the botside jungle.

I dunno whether there are better alternatives, but my team used to get invaded quite often and ever since I've started doing that we've never been invaded by surprise. If they do invade we're technically more ready than they are and I feel like this small effort is worth the trade-off. Of course if your jungler wants a leash topside just do the same vice versa, technically you only need a single person doing that. Yes, it does use up a trinket really early on but I feel like it's worth the trade-off.

Just something I thought would be nice to share