99 cents via eBay offers the Sticky Pad Anti-Slip Mat for $2.99 with free shipping. That's the lowest total price we've seen for an anti-slip mat with a "v slot", and a current per-unit price low by at least $1. The "v slot" holds most cell phones upright in landscape mode.
Allow two to three weeks for this item to arrive.
These houseplants are known for their ability to remove toxins from indoor air. They also offer other benefits ranging from improving sleep to moisturizing skin.