Merry Christmas to you too :) the case is this one https://amazon.com/dp/B07RTRL51J/ref=cm_sw_r_cp_apa_i_KRCaEbBR57S8M
Fits my Anne pro 2 and Logitech travel mouse perfectly with enough room for cables :)
Edit: shout out to u/Jhambone9190 for the idea to use the printer case
Link to case: https://www.amazon.com/gp/product/B07RTRL51J/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
Hard cases for portable scanners and printers seem to fit 65% keyboards pretty well. To find the best match it takes a little time going through the Amazon search results finding one that matches your 60/65% keyboard. They are cheap too.
Edit: I realize KBD fans has a case, but it did not fit my keyboard and was $35 without shipping, plus the KBDFans case is sold out now.