hello nutnicha,
i been thinking how you can make some extra money without doing a full time job. i not want you to work 80-100 hours a week, it's too much.
Firstly you obviously have good office and media skills. by media i mean computer, internet and moile phone. I would say you an i-phone expert;-)
You like cooking, but is there one or two dishes that you do best? Now are those dishes popular? can they be mass produced? ie; like a gallon of soup that can feed 25.people. if the answer is yes, that maybe is easiest solution.
Using your existing work skills there are websites that employ freelancers. ie www.freelancer.com https://www.odesk.com www.peopleperhour.com/freelance
www.elance.com
these sites have thousands of employers needing work done. you will need to register, fill in bio etc
The opportunity to establish a travel guide website for Trat. with help of friends, family and google, you can build a website that highlights local attraction, hotels, transport, restaurants. you earn money by advertising, bookings and referals. once established it wont take much time or effort to answer enquiries and keep up to date. think this is a good passive income earner
Become an online buyer/seller on ebay and alibaba.com sell local products online.
become an agent for International company wanting to do business in Thailand. Alibaba.com have these listed
Dont think small because all good products and services are liked everywhere
Hopefully these options create some ideas of your own, or make you want to try one or some of above
most important is you are own boss and happy
love you
Steve