Co-bathing options? 🛀

I want to start regularly co-bathing with my eight month old. She can sit unsupported. We’ve done it a couple of times and it was fun, though I had my arm around her the whole time and she was facing away from me. I will buy a non-slip mat but was wondering if there are any solutions you can recommend, such as some kind of bath brace? which will allow her to sit at the other end of the bath facing me, and will give her more support. I don’t even know what these things are called. I just saw someone post an image on glow and I can’t find the post...

Obviously I won’t leave my baby alone for a second in the bath. This is just so we can perhaps be more interactive. I believe she is ready for this.