See if this site helps you: https://keepstudy.org/small-laundry-room-ideas-and-design/
Also - what about hanging baskets? Those might work if you have some wall space to spare?
I’ve also seen collapsing Landry baskets at Rossmaybe you have enough room between the machines to store them, or against the wall?
Yup - look up! See if you can suspend shelving, hang some on the walls. What about putting a rail up high with baskets hanging from the rail?