A survey asks once. A box stays open.
One link that lives in a signature, on a noticeboard or in a group chat. People say the thing when they think of it, which is almost never the week you happened to send a survey.
Which one do you actually need?
Use a survey
when there was a moment. A course ended, an event happened, a quarter closed, and you want the same questions answered by everyone who was there.
Use a box
when the thing worth hearing turns up on a Tuesday for no reason. Nobody has to wait for you to ask, and you do not have to keep asking.
Use a poll
when there is one question and a meeting on Thursday. Everyone votes, everyone sees the count, the argument ends.
Where people put the link
Print the code. Staff rooms, waiting rooms, classroom doors. Nobody needs an app.
Two words and a link under your name. It collects quietly for months and costs nothing to leave there.
The place people already complain. Pinning the box turns a passing grumble into something you can act on.
Drop it into a page in your own wording. No banner, no chat bubble following people down the page.