Note: this may not be legit!!
but hypothetically make some extra money by offering your day job services privately on sites like 5 squid.com
if your fortunate to have a job that allows you to do this during your working day (on breaks obviously) you can make a tidy sum
eg architect, cad design, Photoshop work
time and tools/software are paid for already and income is tax free
money is all payed directly into your paypal (Black ops fund) so no need to bother the other half with those silly little bike related purchases