[CHAT] Finishing off bookmarks

Hi,

I cross stitched a bookmark and am wondering what fabric you'd recommend to back it for functionality and aesthetics.

I intend to use wonder under per someone's recommendation: https://youtube.com/shorts/ZAoepyWOnU4?is=N2hPCsGK_p5Wa8QL

I have standard felt but it seems like it would make it a bit thick. Is there something better? I'm willing to spend money, this was for an art exchange (I got a double knit scarf) and the recipient is a big reader so it'll get used.

https://preview.redd.it/cxygxz463vih1.png?width=395&format=png&auto=webp&s=90867bb064df1166b4b589e98de807cd0944cb85

Thanks!