Looks like amazon has some similar, maybe not quite as nice. Try looking for slatted wooden shelves/bench/shoe rack
If you put a couple of these together it might give a similar effect. Since the bed is basically on the floor, the shelves don't need to be too high. https://www.amazon.com/dp/B08BBS381N?ref_=cm_sw_r_cp_ud_dp_B484J39DVDABD91G1H9R