If you want all the designs at once... here's a few more ideas.
Higher Security Training
The enemy is going to try to sneak through our border, using lies, false paperwork, lies, threats, lies, threats, and probably bribery. This training is to defeat three things. Agents that come back, agents that use bribery, and agents that use false paperwork. First, to prevent enemy agents who got away from getting back, records are taken of their face, copied, and posted in all border checkpoints as 'people to never allow across'. Secondly, to prevent bribes, border officals are trained to... accept all bribes, and then report the bribe as soon as possible, whereapon they will be given an equal reward to the bribe they took. This will allow us to reliably detect anyone who attempts to cross our border using bribery. Lastly, they are given intensive training on what actual paperwork looks like, cross referenced with counterfeits from the 'False Paperwork' project if that goes through for them to practice on, to make it harder to fool them with paper lies.
Smuggler's Pistol
This semi-automatic pistol is designed so it can be taken apart into at least three different pieces, whereupon it can be stored in very small pockets, and then be smuggled across the border and used by agents placed within the enemy's territory.
Sudden Takedown Training
Our agents may not be able to bring guns, bombs, or body armor across the border, but what they can bring are their own two fists. Let's give agents finely honed training in melee combat so they can beat people up with their fists. And then, if they beat up an enemy police officer or something, they can steal the other guys gun and start using that.
Homebrew Explosives Training
It turns out that all sorts of household liquids can be turned into crude and not entirely reliable explosives if you know how. Currently, our agents do not know how. As such, they will be sent to this month long training course in how to turn alcohol into firebombs, drain cleaner into jury rigged bombs, and shampoo bottles into throwable explosives. It's not like the enemy can keep our agents from buying household supplies, right?
Smuggler's Tunnel
While there's much to be said about fooling the enemy at the border and walking right through... it can be difficult to, say bring a sniper rifle through the border checkpoints. As such, instead of going through the checkpoints, and using the item known as a 'shovel', our men will start far enough from the border to not be caught and then dig a really really long tunnel until we're far enough from the border to not be caught... on the other side of the border. After that, we can literally send our agents right underneath all the checkpoints and bring whatever we want across with them.