I'm willing to try something if I can do it cheaply. $200 for cable elevators is a lot. Google ceramic insulators and you'll find loads of different sizes and shapes. Vintage ones look cool but are more expensive, but newer white ceramic insulators for electric fences are only a few dollars each. Here's an example:
https://www.fleetfarm.com/detail/zareba-corner_post_ceramic_insulator_-_10_pk./0000000220275?utm_sou...
https://www.fleetfarm.com/detail/zareba-corner_post_ceramic_insulator_-_10_pk./0000000220275?utm_sou...