I lost dongle (USB receiver) of my laptop, Help me?

I have Logitech k270 keyboard. I bought it few days ago in used. I lost its dongle I looked for it everywhere but couldn't find it. I researched and they said connect it by Bluetooth but I checked k270 isn't a Bluetooth variant. The only way is to connect with dongle. Is it all waste now? The mouse and keyboard.
I can't afford another one I m so tense.
Another way was to buy a universal dongle but I live in village area there aren't much variety of stuff available here. And some people says it doesn't connect with universal dongle either or maybe the dongle will cost same as the keyboard so it's not worthy.
Can anyone help me out?
I lost dongle (USB receiver) of my laptop, Help me?
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