If it's a non-porous body safe material you can easily disinfect your toys and safely share them. Glass and Steel are obvious examples. While Silicone is technically porous it's still safe to disenfect as Matis Black from Tantus Inc explains :

Actually Silicone is porous but where silicone holds its benefit against bacteria is that Silicone, by nature, has low surface energy and is hydrophobic “water-fearing,”. These two features greatly reduce the risk of giving bacteria a place to live. Most bacteria needs a moist environment to live and Silicone, by its very nature, typically prevents that from happening. Silicone can also be made with antibacterial properties embedded into its chemistry but for Tantus’ use of silicone, embedding those properties adds higher-than-expected levels of toxicity to the material and may tend to kill helpful bacteria in the human body. And finally, Silicone can typically withstand temperatures of 125 C for short lengths of time without breaking down its structural and physical properties. The ability to withstand high temperature allows Silicone to be sterilized between uses.

Look my man, ever since I heard about the orgasm gap I've unexpectedly acquired a new hobby and become an expert on this stuff. Not saying this is good, just stating facts.