User name Checks out.
But really, any small fire safe would work. I found one small enough to fit under the bed on Amazon for 20 bucks. But if space is tight or you have so many cards you need a filing system, try these fire sleeves:
https://www.amazon.com/dp/B07C176SBD/ref=cm_sw_r_cp_apa_i_FVrDCbDKF0Y4X