I have several huge driftwood pieces if you live anywhere near me. They are too big to ship except as freight. The nice thing about them is they can be used bother horizontally or they will stand up on end. The are in the 2 -3 foot length range. By I am in NY about 35 mile NNE of NYC as the crow flies.
You cannot find wood this size at kens or live aquaria or anyplace else similar. You might find them on Ebay or a similar site. I spotted them for sale on the MFK site and drove 4 hours round trip to buy them. I did not need them all but it was a package deal.
I got it on MFK- go to this thread and scroll down to the 4 pieieces all standing up- I have them all plus the mopani and one or two more.
https://www.monsterfishkeepers.com/forums/threads/few-pieces-of-driftwood.747066/
I used kens foods for almost 20 years. I make my own mix of several of his flakes and several of his sinking sticks. But I also feed a lot of frozen and Repashy. I just sold all my kensfish sticks as I recently bought almost 9 pounds of the Ebo-Aquaristik foods from Germany.
https://www.ebo-aquaristik.de/en/ It is mostly for my plecos and corys. But they do flake as well.
Btw- Ken, who founded kensfish.com, no longer owns it. He sold it. I get some frozen foods there now and then. The ones Jehmco doen't carry.