Confirmed for Version 0.212.6

This list is not exhaustive. If you know mods that are compatible with v0.212.6, post a comment below.

Disclaimer: The Public Test Build can update at any time.

If you are playing the build to provide feedback on the new content, do not use any mods. Use common sense and help the devs out. If a mod you're using doesn't appear to be working, isolate the mod first to ensure it is not a compatibility error with another loaded mod.

BepinEx for dependencies (WORKS)
https://valheim.thunderstore.io/package/denikson/BepInExPack_Valheim/

Better Ladders (WORKS)

Insantly climb ladders without autojumping

https://www.nexusmods.com/valheim/mods/1054

Bigger Chests (WORKS)

Extra row of inventory space in all containers

https://www.nexusmods.com/valheim/mods/1441

Bigger Minimap Discovery Radius (WORKS)

Configurable map reveal radius, including working config UI in the Options menu

https://www.nexusmods.com/valheim/mods/210

Clock (WORKS)

Adds display for time-of-day, with config file for customization

https://www.nexusmods.com/valheim/mods/85

Craft Build Smelt Cook Fuel Pull From Containers (WORKS with community update)

Lets your workbenches pull from nearby containers. Does not work unless you use the community update by murilofiote.

https://www.nexusmods.com/valheim/mods/40

https://github.com/fiote/ValheimModsAedenThorn/releases/tag/Mistlands

DodgeOnDoubleTap (WORKS)

Press directional keys twice to dodge.

https://www.nexusmods.com/valheim/mods/871/

Instant Building Repair (WORKS)

Use ' (configurable) to instantly repair structures around you.

https://www.nexusmods.com/valheim/mods/1277

Fire Is Hot (WORKS)

Makes the handheld torch useful. Doesn't work in offhand.

https://www.nexusmods.com/valheim/mods/155

Floating Items (WORKS)

All items float. Uncertain for new Mistlands content.

https://www.nexusmods.com/valheim/mods/241

Gizmo Reloaded – Rotate Any Axis (WORKS with community update)

Rotate buildables on a 3-axis system. Broken by default, fixed by a community update.

https://www.nexusmods.com/valheim/mods/1293

https://forums.nexusmods.com/index.php?/topic/10131888-gizmo-reloaded-rotate-any-axis/page-7#entry106609618

Instant Monster Loot Drop (WORKS)

Creatures instantly poof on kill.

https://www.nexusmods.com/valheim/mods/164

MassFarming (WORKS with community update)

Better features for planting and harvesting enmasse. Broken by default, fixed by a community update.

https://www.nexusmods.com/valheim/mods/527

https://forums.nexusmods.com/index.php?/topic/9773013-massfarming/page-14#entry118163323

NoStamCosts (WORKS)

Removes the stamina cost for building with a hammer and using the hoe

https://www.nexusmods.com/valheim/mods/18

Plant Everything (WORKS)

Lets you plant and harvest all plants. Works at least for the pre-mistlands content.

https://www.nexusmods.com/valheim/mods/1042

Slope Combat FIX (WORKS, community update for compatibility)

Makes your attacks aim down and up more, for QoL combat on slopes. Compatibility with DoD in a community patch.

https://www.nexusmods.com/valheim/mods/727

https://valheim.thunderstore.io/package/OdinPlus/Digitalroot_Valheim_SlopeCombatFix/

Speedy Paths (WORKS)

Dirt, Wood, and Stone gives speed bonuses.

https://www.nexusmods.com/valheim/mods/452/

TorchesEternal (WORKS)

Never refill placeable torches, lanterns, or campfires ever again.

https://www.nexusmods.com/valheim/mods/945

Unrestricted Portals (WORKS)

All items can go through portals (Works for early game, no idea for Mistlands content yet as I'm not there)

https://www.nexusmods.com/valheim/mods/61

Use Equipment in Water (WORKS)

Equipment doesn't holster when submerged.

https://www.nexusmods.com/valheim/mods/121

USER VERIFIED

Top Mining (WORKS verified by Gandalfonk)

Mines deposits from the bottom up, without wrecking terrain.

https://www.nexusmods.com/valheim/mods/1450

AnyPortal (WORKS verified by Moogy)

Select any portal from any other portal without tagging

https://www.nexusmods.com/valheim/mods/170

Render Limits (WORKS verified by Moogy)

Change the render distances beyond the default configurable values.

https://www.nexusmods.com/valheim/mods/1842

Auto Repair (WORKS verified by Moogy)

Automatically repair items upon interacting with a workbench

https://www.nexusmods.com/valheim/mods/721/

ValheimRAFT (WORKS verified by Moogy)

Create your own ships from buildable parts.

https://www.nexusmods.com/valheim/mods/1136

Seafloor Walking Boots (WORKS verified by Geawiel)

Allows you to craft boots that ignores the effects of water, for use in deep sea construction

https://www.nexusmods.com/valheim/mods/1580