Puffer vests and heavy boots. Hides your chest, disrupts your silhouette, keeps you warm, and makes you look ready for an adventure at any moment. Makes you actually ready for an adventure at any moment.
Cargo pants are also great for that, and you can get vests that are kinda like cargo pants. Just pockets all over. Messes up your silhouette, and you get storage!
If you can handle it, a sports bra may also help a bit, it’ll smoosh your boobs in a tad and keep them from bouncing too much.