If you wanted an 8GB stick: https://duckduckgo.com/html?q=%22badusb%22+%22resistant%22+%228gb%22
Mutatis mutandis for other common capacities.
Consider Heads.
See Rutkowska’s State considered harmful.
Sadly, they do. So do many storage devices.
As Andrew “Bunnie” Huang noted in the video here and the post here, about the Novena laptop: “A few years ago, if someone presented you a scenario where, perhaps, you’re worried about your hardware being modified as it’s being shipped to you, they’d say, ‘You’re crazy, you should have a tinfoil hat.’ Turns out, you’re not that crazy. There’s actually evidence lately that that does happen… If you can’t hack it, you don’t own it.” “Back when I started the project, it was me and a few hard core open ecosystem enthusiasts pushing this point, but Edward Snowden changed the world with revelations that the NSA has in fact taken advantage of the black-box nature of the closed hardware ecosystem to implement spying measures—‘good news, we weren’t crazy paranoids after all’.”