Try This : Add a Corner Shelf to your Shower - Deuce Cities Henhouse
GoShelf™: Corner Shower Shelf That Looks Seamless
Large 4 Tier Corner Shelf with Guardrail) - Baoyouni Extra Large 4 Tier Bathroom Bathtub Caddy Constant Tension Corner Shower Rack with Towel Bar - Ivory: Bathroom Accessories: Amazon.com.au