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Similar story here with my A. Avic. Mine actually enjoys webbing the glass and It is just so simple to get a paper towel tube cut it where there is an opening going vertical removing enough where the spider won't get stuck and just rest it on the glass and secure it by sticking it in a few inches of peat moss if you are so short on cash that you cannot put a twenty down on some decoration. Spiders are easy. With the humidity the A. Avic requires the cardboard tubes will have to be replaced but in a pinch they work fine for a premolting spider who might not be able to grip the glass as well that just wants to snuggle in something for a molt. If your really tight on cash or just frugal, large cheese ball plastic containers work in a pinch to house or use as a temporary enclosure. You will only need to provide ventilation to the spider by altering the container with appropriately sized holes that are not left rough. Part of the enjoyment of the hobby however is enjoying the nice enclosures for tarantulas. Typically the acrylic containers with the nice vents or slits for ventilation. I don't like kritter keepers aesthetics, but for the price they are great for larger juvenile spiders in a pinch. It is rare that tarantulas are in petstores in this area. The specialty pet stores I know of do real well with the tarantulas, it is the huge well known larger petstores like petsmart and petco that have little variety in spider selection and rarely sell spiders when they do actually have them. Personally I prefer to buy online from the breeders and collectors who specialize in tarantulas and other inverts. I only go to the large petstores if I am having to go in and get crickets. Now I found a place to buy roaches online for feeders at a good price without a huge shipping fee, so, I don't think I will be shopping in the big petstores in efforts to avoid becoming another sucker for an improperly housed tarantula. Josh's frogs on Amazon has a great deal.