With the hectic holiday season in full-force, I've been really enjoying the BP Mods TMD boro, due to it's ease of use with drop-in PnP type coils...
If one owns, or plans to purchase the TMD boro, I've found the Wotofo SMRT PnP rebuildable coils quite easy to use.... VERY decent flavor and performance...

Sourcemore has the RBA kit for only
$2.37 USD (logged-in price), and the mesh / cotton kits for the same $$:
Wotofo SMRT PnP Coil is fit for Wotofo SMRT Pod Kit, interchangeable with VOOPOO PnP Coils/Vaporesso GTX Coils, perfect for RDA experience with less hassle, cut down on coils waste
www.sourcemore.com
Wotofo SMRT PnP Mesh & Cotton Set is designed for Wotofo SMRT Pod Kit/SMRT PnP Pod, 0.2ohm coil resistance, perfect for the fun of rebuilding, provides great vapor production, 10pcs each pack.
www.sourcemore.com
EDIT: There's also these PnP tanks (haven't tried it, but probably will

), which were recently released for only $12.90 USD:
The Authentic ETU A2 Bridge Adapter is a Billet Box Bridge adapter that allows you to use the esso GTX coil / Voopoo PnP coil (not included) ETU A1 Bridge Adapter for Uwell Caliburn G Coil: ETU A2 Replacement Tank: 3FVAPE Recommend Products:
www.3fvape.com