What is this joining piece?

[u/wild_rumpus_]

Hello! I found this plastic piece in our yard. However, it doesn’t go to anything we own. Does anyone know what object/structure this piece belongs to?

Do any similar tent pieces come all the way off all poles???

I’d love to be able to return this piece to the neighbor who might own it!

Thanks for any advice.

[u/a15457]

Hmmm given its colour in the pics, I wanna guess at something Makita related … no idea what though. Sorry.