Not a lot of snake owners do
Well... I agree on the sand, anything they can crawl and hide under as far as substrate you wouldnt want them to accidentally ingest (such as sand or small particle based substrate). Aspen is good, I used that to start but got sick of cleaning and changing it out. I posted the same type of message as you cause I was curious as far as other options. I asked about astro turf and I never saw anyone who objected. Mys nake has used it now for almost 4 weeks and really seems to like it. Not only does it allow you to view your snake more often but it still gives him freedom (you can still use plenty of hides so he has space to hide away if he doesnt want to be out in the open). Plus its easy to clean, they normally come in packs of two or three so you can rotate out. All I do is when hes soiled it, I take out his hides and cage items and place them aside. Then I take the soiled mat scrub it and place it in a sink full of hot water and bleach and let is soak for a hour or two and then throw it in the dryer. While that one is soaking I just use one of the clean ones to replace it with. I think its a great substrate. If your looking for easier newspaper always works. Couple of layers, don't have to wash or clean, just replace and then wipe down the cage every couple of weeks. Hope this is semi-usual or sounds interesting to try. Take care.