TLDR : Answer Summary
The paperwork required for the Covid Extension for a TR visa in Thailand includes: a signed copy of your passport data page, a passport photo, proof of filing a TM30, a signed copy of your departure card (TM6), a signed copy of your latest entry stamp, previously issued Covid extension stamps (if applicable), a filled-out TM7 form (with email/phone on the back), a filled-out STM2 form, and a form indicating your desire to stay due to Covid (exact name unknown). Additionally, there is a fee of 1,900 baht. Locations may have varying requirements, so it’s advisable to check with the specific immigration office you plan to visit.