Clean surface. Moisturize cup. Press firmly onto PVC surface. Remove air bubbles. Adjust if needed for better adhesion.
How to Make Suction Cups Stick Better: 12 Easy Tips
QIFEI 20Pcs Mini Suction Cups Clear Without Hooks Without Holes, PVC Plastic Sucker Pads for Festival Decoration Wall Glass Home Car 25mm
Sticking Suction Cups to (some) Non-Smooth Surfaces : 5 Steps (with Pictures) - Instructables
QIFEI 20Pcs Mini Suction Cups Clear Without Hooks Without Holes, PVC Plastic Sucker Pads for Festival Decoration Wall Glass Home Car 25mm
Suction Cups: How To Make Them Stick More & Suck Less
Small suction cups with hooks.
High Quality Transparent Powerful Sucker PVC Suction Cups with Hook for Glass Table Mirror - China Rubber, Rubber Part
Using suction cups: Tips and Tricks - Kingfar
Creative Uses for Suction Cup Hooks