The cheap ($50 or so IIRC) bidet I have gets cold water from the toilet and hot water from the sink. No power hook-up. Has none of that other fancy stuff you me

The cheap ($50 or so IIRC) bidet I have gets cold water from the toilet and hot water from the sink. No power hook-up. Has none of that other fancy stuff you mentioned. Not exactly sure what you mean by "bidet seat" vs "handheld bidet" based on context, but mine goes under a regular seat (seat isn't replaced) with controls jutting out the side. I have also used what I'd call a handheld bidet during an extended water outage. It was a squeezy rubbery thing from Amazon, a bit like a cycling water bottle, and I'd fill it up with water from a jug or sink depending on where I was (was not "attached to the cold water line"), then it squirts out water from an angled plastic tip. I found I had to be a lot more efficient with that to get the job done on one fill, but it was certainly better than nothing. Thinking on it more, maybe your handheld was like a pressure washer, totally separate from the toilet, and what I had in mind would be called "portable".