I think that one is tricky, because you already have a lot of matching funriture. And it look like you don't have that much space there either, right? How about a floating shelf in a matching wood, something like this.
Well crap... I want to do something like this one but deeper: https://www.amazon.com/dp/B081YW1S1K/ref=cm_sw_r_apan_glt_fabc_NMC40F2GZAGEBDGVNXTQ