Same here, i never buy plastic bottles while traveling and always use reusable bottles and never throw any garbage which i collect during traveling. i generally keep a bag to collect and then throw it when i find a dustbin.
Yes it's very important to take care things which can harm our environment. i do prefer to take water bottle along with me always,i never use plastic wrapped things like chips and all and if use then we have to take garbage bag along with us. do not spit on public area, never through anything in revers.
This year the theme of World Environment Day 2020 is “Celebrate Biodiversity” I would personally request everyone if you see any animal cruelty near you, try to stop it and educate the morons about it! The laws aren't effective, so we need to try this on our personal level first. Yes, I've done it myself as well in past whenever i saw someone hurting dogs, I've intervened and stopped it. Cows ke liye respect sabke andar hai, but please think of other animals too! Peace✌️ and Love ❤️❤️❤️❤️❤️