What can products from www.openbci.com be used for?

As demo devices are shipped around the world to make demos, as for instance the one from sendex:

or paid promotional papers about ECG:

https://www.cell.com/heliyon/pdf/S2405-8440(21)01251-2.pdf

and EEG:

https://www.mdpi.com/1424-8220/23/7/3763

and then sending the demo device back to www.openbci.com. But what else can we do with it products from www.openbci.com? Since will sooner or later not majority of EEG device users change to this architecture: