I am finding more 5e adventures piquing my interest than Pathfinder ever did. I guess that just reinforces my thoughts that there is an amount of synergy between the OSR and 5e.
Case in point: Carcosa for 5th Edition from Dark Naga Games. While written for 5th edition it has some old school sensibilities: "A non-linear adventure in the classic Sandbox style where the party (Level 11-12) fights to escape the lair of an Old One--Hastur." Yeah, I can see myself running that for Swords & Wizardry.
Immediately following the events of Confronting Hastur, the characters wake up in Carcosa and are greeted by a broken man who tells them they only have a day to escape the plane before becoming permanent residents. The way home appears to require them to confront a demon lady and the three demon brothers who constantly vie for her attention and their domains within Carcosa. A land teeming with minor demons, humans, and three powerful Abrar, dreadful demon lords. Pressed for time, the party members find themselves pawns in the petty games of the brothers as they claw their way to worship before the lovely Grushka, the Abrar who runs Carcosa while Hastur slumbers. Their search for a way home reveals rumors of a way to trap Hastur in a longer, deeper slumber, giving their world peace from his attempts to invade for hundreds of millennia to come. Will they work to go home, or will they chance eternal damnation to save their world?$10 for a digital copy with all digital stretch goals
$20 for Print plus digital with all stretch goals