What are these?

[Palavah]

Having a clearout.

About 5 feet long
2 identical
black flexible plastic
Flat with rounded ends.

What are these?!

Tent or play tent poles

Hmmm just reread the description.

Net curtain "pole"?

I wondered that, but I don't have any curtains!

Could they be fitted through the hem at the bottom of roller blinds?

I knew I had seen these somewhere in my house - they look like the poles that are made into cat toys but ours are only 45cm long so can't be that.

Could they slide on to the edge of a shower screen?

Poster hangers if they have a slit along the length?