Since we just talked about rural banks (BPR) here: Do you know the App "DepositoBPR"? It seems with that app you can open a deposito in a rural bank and you can choose from several BPR. I think they also offer that you can put the money into a portfolio of BPR depositos. Might be attractive since you can spread the risk a little by that. I mean, as long as you trust LPS, there should not be a risk (as long as the interest rate is covered by LPS)...but still, in case of a bankruptcy it probably takes some time until your money is available then. And by the possibility of easily opening several depositos in different banks, not all your invested money is blocked then.
Maybe someone here already tried that app? Probably, the most interesting and important question with that app is again the question regarding LPS - so if the money is secured by LPS if you open a BPR deposito (or several) by an app like that. If so, it seems like an interesting option for people interested in depositos.