Cleaner
In today's busy world, many people will pay you to take the household chores off their hands. You could offer cleaning or ironing and work as many hours as you wanted. If you don't want to promote your own services around the neighborhood, consider joining a house-cleaning company and go on its books for the back-up of an established name and company.
Virtual Assistant
Do you have office or personal assistant (PA) skills that you could sell in an evening? If so, there is an increasing demand for the services of virtual assistants. You help executives or small businesses in a whole range of tasks a PA might do, but you do it from your own home on your own time. There are many online companies that will list your services to their clients.
Got Spare Space?
Do you have spare room or a garage space you could rent out? If you don't like the idea of having a permanent lodger in your home, consider renting the space to exchange students or overseas visitors to local colleges. This way you will have periods of peace. If you live in a popular city where parking is at a premium, you can rent out a parking space or garage space.
Like Animals?
If you like dogs and a good walk, consider becoming a dog-walker in your spare time. You can charge per dog you walk. If you can drum up business, you could walk two or more dogs at a time. Doing this could double or triple your earnings. Offer pet-minding as well and you could make a whole business out of it. You should check out liability insurance in case something happens with a dog and a member of the public.
The Bottom Line
Many people are turning to their evenings and weekends to earn alternative incomes, whether or not their plans are to eventually leave their day jobs. It is crucial that your side business doesn't jeopardize your current job. Only you know what your company's policies are, but be sure to assess your present situation. Do you need to be upfront with your boss about your evening business? Of course, you cannot let your business interfere with your work. "Business" emails and phone calls during your working day should never occur.
If you want to run a business and also work full time, you need to be prepared to be focused, disciplined and not have too much down time. If financial freedom and doing what you love is your motivation, you should go for it. It's easier than you think.