I could certainly get behind such a thing.
I wouldn't have thought of cans and bottles per se, but the bottles would also make nice molotovs, for example!
I've never seen any bits for electric torches/flashlights, for example. Fantasy kits occasionally include lanterns, lamps, and torches, but I'd like to see a better variety of that sort of thing, especially in more modern and sci-fi kits.
I've seen a few bits that could pass for cell phones/tablets, GPS, drone controlers, radios, or whatever, but they aren't very common. There were a coule nice bits from the digital Cannon Fodder civilians that could pass for scanners/trackers, Star Trek style "tricorders", detonators, or other gizmos, but these sorts of bits are also uncomon.
A hand holding a badge/ID was notably absent from the Agents set, where it seems like an iconic natural fit for undercover officers, fedreal agents, and so on.
Binoculars, radios, and canteens are classic military action figure accessories, mostly instantly identifying an officer or leader. Entrenching tools/shovels, machetes, hatchets, mine detectors, and so on are in a similar place. You see a few bits like this in historical military figure kits, especially engineers, command, and specialist kits, but they're not very common otherwise.
Syringes, bone saws, scalpals, and other medical bits, and first-aid kits, help visually identify a medic character, who tends to get some special attention in skirmish gaming.
Every now and then I see scabbards/holsters for shotguns, carbines, machine pistols, and assault rifles, and these are nice when I see them for modern/sci-fi adventurer types. Bandoliers and bullet-belts aren't very common, I can scratch-build these with only a little trouble, but not everyone is into that! Pistol holsters are a little more common than most of these sorts of bits, but not overwhelmingly so, while pouches and grenades are pretty common, so maybe a few of these might be useful, but no need for lots of them, I think.
I like the police whistles and truncheons that came with the Victorian Police digital set, and I believe there was a pulp exorcist/priest digital set that included crucifixes, vampire stakes, and holy water - I love those sorts of bits. The sticks for protest signs in the civilians kits were a nice inclusion, by the way!
I always enjoy things like musical instruments, hand and power tools, meat cleavers and butcher knives, when I see them, for non-combatant characters, or for improvised weapons in mobs, for brawler characters, and so on. Fantasy villager/townsfolk kits often include sledges, picks, scythes, pitchforks, lumber axes, and that sort of thing, but not in any great numbers. I treasure the tiny handful of chainsaws I've been able to get my hands on!
Backpacks aren't unusual for military kits, but modern civilian backpacks are a little different, and less common. Duffel bags, satchels, briefcases, and the like are also uncommon. These sorts of bits are kind of common for cinematic zombie survivors, scavengers, and so on!
I'll add civilian gas masks to that, too: Wargames Atlantic is great about including gas masks for Death Fields and military kits, but civilian gas masks/rebreathers (that is, just the masks, without military helmets) are a different story, and suit survivors and scavengers well.
Anyway, that Sorcerer's Spoils sprue looks like it's going to be great, and I could certainly get behind more of that sort of thing! Not very useful maybe for historical army-building, but priceless for RPG character models, and for urban fantasy, apocalypse, and sci-fi skirmish gaming.