Hi
Have been enjoying wled immensely.
Hopefully this link will work ;
Well, I’ve got to say that of all the things we’ve attached LEDs to, this is perhaps the most unique.
What did you use for a battery pack? Is it waterproof?
Looks great. I just threatened my wife with LEDs on her garden cart, but not too keen on the idea.
Powered by two 10ah power /battery banks , 5v 2.4a output.
Each power bank is powering one of two 171 led strips.
One wemos d1 .
Waterproof to a degree -it’s all tucked underneath.
I love the “Wheelbarrow Waltz” synchro scene. A very imaginative project.
I’ve stuck LEDs on many things and now I’m intrigued as to what to put them on next… 
Thanks for watching & kind comments.
Sort of feel the need to add an arduino nano , adxl345 ( accelerometer /gyro chip ) , and possibly a relay .
Then make the rig motion-sensitive.
Rather think wled wouldn’t want to turn on / off /on etc , so would maybe need a set display.
( or , if relay between WiFi / wled module and the leds ……?)
ADXL usermod?! 
Strain gage(s) to measure and respond to the amount of weight (mass) being carted around.
Another use for when not moving (using that accelerometer / gyro)… green light – keep loading… yellow light – getting close… red light – stop loading and get moving.