Storage Pockets - These have velcro at the edges and are secured with adhesive velcro.
Small 'eye hooks' and a short bungie to hold the pass through open while passing items through galley.
Pure Sine wave inverter to run CPAP....Yes I snore! :) Also has 2 USB ports
Added LED bulbs.
AUX solar panel port.
Our 'grey water tank'. This was a 20 year old water container which just happens to sit under the trailer nicely while the canning funnel catches any grey water.
Added a small shelf under sink. 2 liter bottles x 4 can be stored underneath for 8 liters of water for washing etc. The top holds our extra fuel canisters. Shelf isn't pretty but it was a tight fit without removing door. Also wanted easy access to mechanicals.