I am thinking of a variety of anti-tank missiles and weapons (Javelins, MILANS, TOWS, and similar weapons), light artillery (Hawkeye 105 http://www.mandusgroup.com/artillery_solutions/hawkeye_105mm.php), recoiless rifles, sniper rifles, command-detonated anti-tank mines, MANPADS, and a full spectrum of tools for an asymmetrical war that would kill Russians in large numbers should Putin invade those nations. Every citizen should at least have a shotgun and deer rifle. The defensive posture must be such that Putin's party army would die in numbers too great for Putin to justify to his highly ignorant and propagandized people. To not prepare for Putin, is to risk him doing a Grozny or an Aleppo in Europe. He has the malice to do that to anyone too weak to defend themselves from him.
This type of preparedness would lead to true deterrence and peace for all of NATO. The bully Putin would direct his chauvinistic efforts, all designed to support his president-for-life ambitions, elsewhere where the KGB Colonel could rally his benighted followers without much cost.