On certain on-screen keyboards on phones and tablets, the Shift key works thus: you tap the key, and then the next character you type is shifted, and then Shift is released. That is, you don’t have to hold down the Shift key. It’s like a Caps Lock that cancels itself after one letter.
So are there any tools or hacks to get the same behaviour on a Windows PC? I’ve thought of maybe doing an AutoHotkey script, but it looks like quite a bit of work, and I hate writing AHK scripts anyway.