You could try looking up Barclays and Deutsche Bank and their exchange traded commodity products (ETPs), which are divided into ETFs and ETNs.
JO is the most active one for coffee. You'll note most of them have cutesy names like MOO, NIB (cocoa), CAFE, etc. But do your research, usually there is a product that follows the front month only and another product that reflects a blend of the next several months. As noted by Maverick and others, some of the energy ETPs have been terrible investments with an almost guaranteed loss for buy and holders because of the roll.
There is also credit risk with ETNs (the "N" stands for note), but with banks too big to fail, maybe that's not an issue anymore.
P.S. if you've never traded coffee before, now is probably not the right time to start with full size futures and options contracts. The notional is getting close to $80,000 USD, ATM IV is 50%+, and margins have been jacked, for good reason. JO options might be a better place to start.