@vidak
Refer to it as a #hobby, #hobbyBusiness or '#GoingConcern', not a business. Judging by the flyer we wouldn't refer to it as selfEmployment either.
Be careful not to spend more than 15 hours per week on a hobby or you may be shocked when govt come knocking thinking you are doing something underhanded.
Sad fact.
Its why we are proponents of a UBI that goes up slightly with age :)