Don’t forget the ammo! Burying stuff in PVC pipe might be a good trick, but stashing them in the attic or crawl space won’t work. They will just use bomb sniffing dogs to find the hidden stash.
I have a friend who was a K9 officer with a bomb sniffing dog. I ran in to him one day in the parking lot of the local federal building when he was doing his parking lot sweeps. It was an extremely windy day (25mph+) and I asked him if the wind affected the dog. He put the dog on stay and walk ay about 3 lanes over with the wind and withdrew a spare loaded clip for his Beretta 9mm on a tire of one ofthe cars.
He then walked back to the dog, released him and gave the command to search. that dog found the clip within 10 seconds. This was just 15 bullets, not a hug cache of ammo or explosives.
The last time I went to an airport for any reason (and will never do so again), the dogs lit up on what had to be primer and powder residue in my pickup.
I would revert to horseback, but I have that stuff all over the tack as well.
Sheesh!