Get strong suction cups that have a small groove around the back teet. Use twist ties or baby zip ties to attach them around the groove. Another tip: your snake needs a temporary home for 48 hours... lay your tank on its side and use aquarium sealant to silicone them into the groove around the plastic trim.
With the suction cups your baby may pull them down from time to time. There is no need to sacrifice anything. Ball pythons love plants and obsticles. It makes them feel secure. Having nothing but hides and a water dish is wrong. Would you like to live in an empty shoe box?They spend their time hidden on forest or grassland floors... They need to be secure and have things to interact with for proper keeping