This is a model I designed in Fusion to hold 2 Kitsch or similar sized shampoo/ conditioner bars. Printed in PETG and added suction cups that seem to hold well. If there's a future update, then they failed and I'll redesign the mounts😂. 

Suction cups are 1 ¼". Make sure the nub is 8mm diameter and 3mm or less thick.

It does have a slight downward angle once mounted to the wall. Something I forgot about when designing, but I didn't hate it so I'm leaving it as is. So far seems to work well and looks pretty good.