Your search for "qube" revealed the following:

Tube heaters are perfect for gently heating small to medium size grow areas such as tents. Their compact size allows them to be positioned almost anywhere, whilst making little impact on floor space. The consume very little electricity and can really aid...

Don't just mask odours, eradicate them at their source with OCD Cubes. Comprised of various essential oils these handy sized pots can be placed almost anywhere you are getting unwanted smells for a quick and easy solution to the problem....