Here's that video again
Here are my thoughts on the video:
1) It should have been titled "IF They Come For Your Guns". Personally gun confiscation is pretty low on my list of concerns. Though if I lived in Kalifornia, New York, Chicago, etc I might feel differently. Simply cannot see that happening in most of the US. Anyway moving on.
2) People are more important than things. I can get another gun much easier than I can recover from lethal wounds. This is made much easier conceptually if you have backups, in this case guns with ancillary stuff, stored someplace other than your home. That brings us to Caches.
3) Caches. Like I talked about before you have to consider the context of a cache. In this case I would look at the type of people you might store things with first. Like John Mosby said more or less "Hiding crates of Mosin Nagant's in the basement of the Gun Club's President is not a sound plan". An ideal candidate to cache some stuff with would be either for your cause but very quietly so or relatively neutral about it but very pro you and thus willing to help you out.
In terms of proximity a cache would need to be far enough away from you to be unaffected by the event that concerns you but close enough for you to get to if that event happens. Obviously a cache of guns buried 5 feet from your house or stored with the next door neighbor is a bad plan. On the other hand a gun 2,300 miles away isn't very helpful either. Somewhere between a mile and a hundred miles is probably a good way to go. Of course that is just a rough idea. Obviously a quarter mile from home buried in the state park would be fine. Political boundaries are also a consideration. If you live in California a buddy in Oregon/ Nevada/ Arizona would have some real benefits. Ditto for Cook County, Ill and Pop's Farm in Cornville.
Of course like any other cache appropriate planning and preparation is required.
4) Bait Guns. While I have my doubts about how unwinding all the the NCIS and ATFE 4473 mess for all guns on a national scale but lets just say that happened with some degree of effectiveness. In any case unless they are literally going block by block, door to door searching homes the folks knocking at the door probably know you have some guns. It would probably be a hard sell to convince them you do not have a single firearm. At a minimum that would likely garner unwanted attention. Since you want them to leave, not get deeper into your life, that is bad.
Awhile back Maine Prepper had the excellent point not to try giving them a broken rusty BB Gun and saying it is your only gun. A more realistic option might be a handgun as well as a shotgun / .22/ rifle. The first advantage of this plan would be you have these guns in the home prior to this hypothetical confiscation. A rifle to go hunting, a pistol and shotgun to defend your castle, whatever. If these are basic guns they can be very functional but had purchased at modest costs; particularly if you can buy them when opportunities arise. An old .38 and a Mosin Nagant or pump shotgun could be had for under $500. Aside from the benefit of having more quality guns now you can show them what they expected (which is to find some guns) getting them out of your hair. The second benefit would be that you are meeting their expectations which will get them out your door faster.
As to the rest of your guns? If folks are just doing a door to door search they came and found (or you handed over, whatever) your bait guns then I'd keep my mouth shut. Talking as little as possible around Cops is not a bad idea anyway. On the other hand maybe somehow they unwound all or part of the NCIS/ 4473 mess. At this point they are asking about the Glock 19 SN 12345 I purchased on 9 June 2008 at Shooters in Columbus GA. This rather unlikely scenario is one of the biggest reasons to buy paperless guns.
Well in most of the US private sales are currently legal with no requirements for documentation or going through an FFL. A plausible lie that would be very difficult to improve might be the order of the day. I sold a bunch of guns a few years back: when I was getting stationed in Germany, was out of work for a few months, needed money when the Mrs got pregnant, had to fund a move from Ohio to Kansas, realized I hadn't hunted in years, swapped it for auto repair on a car that's since been sold etc or something else plausible like it fell out of the boat on a fighting trip, was stolen and you mindlessly forgot to report it, lost it in a poker game or whatever. The point would be to choose something that would be plausible and generally matches with some known facts from your life, yet would be just about impossible to disprove. I like events years in the past that occurred in other areas. Sure if the proverbial federal 'eye of mordor' shifted onto me they could try to track down an older shade tree mechanic from Kansas circa 2009 but in a mass confiscation scenario that would not get run down. I suppose this would be easiest for somebody who hasn't bought a papered gun in years that has also made a big move or two. If you've always lived in the same town and bought an AR-15 last summer it might be a bit harder to be convincing and vague at the same time.
It is also worth noting that you would want to rid the home of ammunition, accessories, etc for guns you are hypothetically claiming are no longer in your possession. I expect a mag or box of ammo in the back of a closet could be explained away. However huge stacks of ammo cans and dozens of AR-15 magazines and Glock 17 magazines for the guns you claim to have sold/ whatever would be a hard sell.
So anyway those are my thoughts on that. As always your input is welcome.