I use a Flambeau gun case. I think it might be a tactical case if I remember right. I can fit a 40 inch rod in it. I think I usually have about 5 rods in it with 2 of them being 36 inchers. Think it cost about $40.
I have the Striker Ice Rod Transporter, very handy with the additional storage capabilities but looking to purchase the Scheel’s Ultimate Rod case this year for added protection during transport on the ice.