The IKEA Glostad Footstool (aka Ottoman, Hocker) is in our experience a cheap, nice footstool that can be paired easily with other sofas. Issue is, by default it only comes with mounting gear that works with the IKEA Glostad couch, and none of our couches can mount to these. This means that it moves around more, meaning that the tiny plastic feet it comes with easily get worn off and fall down. Then you're left with a bare metal feet which tends to scratch up the floor.
Here's the Glostad footstool on IKEA Germany: https://www.ikea.com/de/de/p/glostad-hocker-knisa-dunkelgrau-20573286/
While you could use it on its own, I cannot promise that it'd not scratch up your floors.
So, I'd suggest having:
The author marked this model as their own original creation.