You can easily add to your traveling budget while in Thailand through Grabr.io. How it works is that you need to purchase certain items from your home country and deliver them to shoppers in Thailand, or vice versa. You get traveler fees in return worth anywhere from $10 USD to over $30 USD per item.
The good news is that most of the wanted items can be purchased online from stores such as Amazon and eBay that can deliver to your door without you having to go out shopping.
When you are in Thailand, you can either deliver items by hand or simply use a shipping service such as Thailand Post. It’s cheap and there are post offices in all cities in Thailand.