D&D 5E Best follow up for Rime of the Frost Maiden?

[Kilimanjaro]

We're rapidly approaching the end of this campaign and my players haven't decided if they want to make new characters and start a new campaign or keep going with their existing characters. They'll be around level 12 when we wrap up. Any suggestions for awesome level 12 adventures?

 

[Retreater]

I haven't found anything.
As far as high level, official content, there are only segments of larger dungeon adventures, such as Dungeon of the Mad Mage (not recommended) or the Tomb of Horrors from Yawning Portal (definitely not recommended for beloved characters).
So I'd suggest designing your own adventure or starting over with new characters (with my recommendation the latter option).

 

[Quickleaf]

I haven't run Rime or any of these adventures, but I was thinking that Reign of the Ice King might be a cool segue to the Glacial Rift of the Frost Giant Jarl portion of Against the Giants in Tales of the Yawning Portal.

 

[Irlo]

I haven’t found any decent published adventures for level 11+. I hope some one makes some usable. recommendations here.

 

[Thunderfoot]

This is sad. The Against The Giants was one of THE mid-level/high level campaigns back in the day. I hope you find your muse.

 

[pogre]

I love high level play, but I sadly have to agree with the folks above. There is an amazing lack of decent high level adventures for 5e. I mostly write my own and occasionally convert old Dungeon magazine adventures.

 

[Paul Farquhar]

I used a combo of stuff I wrote myself and Candlekeep Adventures.

 

[Kilimanjaro]

I'm thinking about converting the 3rd edition module "Lord of the Iron Fortress." After 12 levels of freezing their butts off in Icewind Dale I the players would like a change of scenery.

 

[Lyxen]

I'm thinking about converting the 3rd edition module "Lord of the Iron Fortress." After 12 levels of freezing their butts off in Icewind Dale I the players would like a change of scenery.

That's not a bad idea, you can then follow with Bastion of Broken Souls, which is not a bad very high level adventure at all, I really like the premise and some of the resolution paths.

 

[THEMNGMNT]

Where to go next? Well, which parts of the adventure were most interesting to you and your players? If they dug the duergar, for example, you could send them into the Underdark and pillage Out of the Abyss for content. Off the top of my head, the frost giant lair from Storm King's Thunder could slot in easily. There's also a white dragon's iceberg lair which was cut from Rise of Tiamat and published on DMs Guild. Anyway, that's how I'd handle it.