If you get stopped by the BiB before you depart it makes for a miserable time…if you don’t get stopped you need to prepare ฿500 per day that you overstayed not to exceed ฿20,000… good luck and next time stay up with your days
Singapore, KL, Vietnam (you might have to buy a 30 day visa depending on your passport), Bali those are the cheap alternatives for SEAsia that are open...if you want a more lucrative alternative the world is large and planes fly everywhere
just go on Monday, don't get arrested or stopped over the weekend and prepare some money for an overstay and the money for the extension...if you don't want to wait travel to a border town or prior to your expiration date, do a border bounce and come back with 45 days in your passport, or book a flight to another country do an out/in and have 45 more days of fun...good luck in your decisions