With waterfowl, special-weapons, and crop-damage hunts, it’s easy to remain afield well after the last leaves of fall disappear beneath the snow. And knowing whose land you’re on is vital—which is where the HUNT Premium Map from onXmaps comes in. Plug the chip into your Garmin and voila, you’ve got every acre of land in Montana identified: landowner names, hunting districts, even Block Management areas. But you needn’t be a hunter to benefit from this handy chip—skiers, snowshoers, and other winter recreationists should know when they’re crossing private land, too. For a more affordable option with regular updates, the company makes apps for mobile devices. $100; onxmaps.com.