Aftermarket console with armrest and cupholders

You could make your own. You can get stainless steel cup holder inserts on E-bay. Then build a box out of MDF and trim it to fit the floor hump. You can play around with designs to get something custom you like instead of being stuck with something that wasn't designed to fit the space. Then buy some marine grade vinyl and foam to cover the MDF.

You can use cardboard to make templates to fit the floor hump and to test different designs before you transfer it to MDF.