Okay I deleted most of the off topic comments that had NOTHING to do with the O/P's situation (sorry some good comments got deleted too).
The O/P has a 6 month METV and that VISA expires on Oct 25th so they need to make their final exit/entry on/by that date
They don't wanna bounce by land (which is their choice) SO they need a country to get in to without having to buy a visa before they go
As James said Cambodia/Lao they can show up and by a visa at the airport when they land, Malaysia they get in to FREE, so a bounce to KL is an option, Singapore they get in to for free as well.
Those are the only countries I know of where they can just show up get in and out easily.
Sadly for you
@Lindsey ******
as much as you don't want to border bounce by land that may be the most cost effective solution to your problem.
Good luck with it, apologies for deleting helpful comments when I was taking out the not so helpful ones ๐ฎ