Exotic headsets like fNIRS, Neurosity Crown, Mentalab? What have you tried?
Or all the other ones reviewed by Cody Rall?
mentalab was used for Explore+ | Mentalab and GitHub - MyelinGroup/myelin-fuzzy-logic: EEG Fuzzy Logic Pipeline
Millimeter-sized battery-free epidural cortical stimulators | medRxiv just got released
Lokey here: Motif Neurotech and intraoperative experiences. Proud parent. | JoJo Platt posted on the topic | LinkedIn
https://www.sfrey.net/ has some neurotech sites he collects (Mina Fahmi also wrote one such lsit)