Does anyone here know of a place where people can trade continuous commodity futures without expiration? Something like on Bitmex where people can trade bitcoin, ethereum and so on just with wheat, coffee and other commodities instead. No physical products. Just a cash settled bet between people. CFD gambling bucket shops with crazy fees I stay away from.

No such thing that I know of. Never understood the "funding" aspect of cyrpto perpeutuals. If there's more buyers than sellers the price will go up, why add in a funding cost to help balance the market UNLESS the exchange itself is taking the other side of some of these trades at times of imbalance and what extra compensation for doing it.