Here's mine! Started with a $350 1800 lb trailer kit from Harbor Freight. Then bought about $400 worth of Hardware, wood and paint and just started hammering with no plans whatsoever. This is what I ended up with.
And it was EXACTLY what I wanted!!
The license plate you see under my handle is the one on my trailer

It has:
12 volt deep cycle battery
Full compliment of chargers
400 watt power inverter
Solar panel installed on the roof to keep battery peaked
2 twin 12v ceiling lights
TV/VCR combo for in-flight video
dead-bolt locks on all doors
VERY loud alarm!
Fully carpeted upper interior (I slept in it at a float fly!!)
Room for 2 Giant scales and few small ones to boot (I can put my 30% Pitts in assembled!)
6' x 3' folding/slide out work table
Dimensions: 5' x 8' x 5'