Pure Outdoor by Monoprice Weatherproof Hard Case with Customizable Foam, 13 x 12 x 6 $14.99

On sale from $67 to $15, looking to use it for Quest 2 VR, but would also make a great firearm case or anything you don't want damaged.

Provide IP67 level dust and water protection for firearms or tablets using this customizable Weatherproof Hard Case from Monoprice!
The IP, or Ingress Protection, rating is a two digit value that indicates the level of protection provided by the cases. The IP67 rating of this case means that it provides complete protection against dust and other solid particles and that it can withstand up to 30 minutes of submersion in water at up to 1 meter depth.
The case is constructed of impact and ultraviolet resistant engineer resin with glass fibers and has a fully customizable foam interior for superior shock protection. A pressure relief valve allows you to slowly and safely equalize the pressure inside and out. Two 7.0mm lock holes allow you to secure the contents.
Features:
Designed and developed to the comply with the highest safety protection standards
Waterproof up to 1 meter depth for 30 minutes
Shockproof design with fully customizable foam interior
Total protection against dust and other solid materials
Ultraviolet and impact resistant material
Manual pressure relief valve allows for gradual pressure equalization
Seal design provides IP67 level protection
Customizable name plate
Rubber covered handle for improved grip and comfort
Two 7.0mm diameter lock holes
-40 ~ +194°F (-40 ~ +90°C) operating temperature
543 cu in (8.89 liter) internal volume
20.06 lbs (9.1 kg) maximum buoyancy
13.4" x 12.0" x 6.1" (340 x 306 x 155 mm) external dimensions
12.2" x 9.4" x 5.1" (310 x 240 x 130 mm) internal dimensions
Weighs only 4.76 lbs (2.16 kg)

https://www.monoprice.com/product?p_id=12683