Spinr is a hand-powered washing machine that uses no electricity. A retractable mechanism of Mumtaz’s own design means minimal manual labour is required to use the device.

Spirn was design as a way to help university students and other people without in-home laundry to be less reliant on circuit laundry. On average circuit laundry (such as in a laundromat or student accommodation) costs about £7.50 a wash. This cost can have a negative financial impact on students from lower socio economic backgrounds. Spinr is also designed to be portable and is small enough that it can be easily stored, meaning it can be used year to year as students move through various types of accommodation. It uses less water than a traditional laundry machine and no electricity, further cutting costs while also benefiting the environment.