You can find wooden crates like these at thrift stores and the greenery you can find at the Dollar Store. Take a piece of floral foam and cut it to fit the box. Use various plastic greenery. I tried to find some grass, but since the nearest craft store is 75 miles away, I had to settle on the stuff at the Dollar Store.
I also found some cool vintage shelf liner which I glued to each side. Just place your stuff that needs to be charged in it's own little garden and run the lines out the back of the crate.