Flexible TPU rubber headrest.
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
New Bee Z1 Headphone Stand Aluminum Headphone Holder Anti-slip Headset Headrest Bracket Support | $3.69 | – |
Click here to search by yourself. Here are coupons that you can use.
Updated:
Banggood
Warehouse in China.
Link: New Bee Aluminum Stand for Headphones
$10.32 with coupon: BGAFF10OFF
$10.32 with coupon: bGhOnEy10
$10.32 with coupon: BGdragonBoat
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
Here is price history (for all/most countries) for New Bee Aluminum Stand for Headphones. The lowest price was: $4.93.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).