Caution this is very very experimental but you can build your own, and there are kits on Amazon that sell products as well. There's a whole universe of jargon a

Caution this is very very experimental but you can build your own, and there are kits on Amazon that sell products as well. There's a whole universe of jargon and methodologies concerning "montage" but the community likes to study these through scientific right. Here is a starting point https://www.reddit.com/r/tDCS/comments/2e7idx/simple_montage_list_with_electrode_placement_and/ https://www.reddit.com/r/tDCS/comments/2e7idx/simple_montage... I'm not an expert, attempt at your own risk