This is an LCD box I made in Fusion 360 to hold a "SainSmart IIC/I2C/TWI Serial 2004 20x4 LCD" controlled with an arduino. The LCD fits in the front tightly and I applied hot glue inside of box for extra strength. The side holes are for a switch (top) and female USB-B (bottom) port so you can program an arduino without opening the box and taking everything out. The box is large enough to fit an arduino uno, small usb power supply, wires etc. Second file is Top lid which rests on bars across inside of box, compression fit but could be screwed if needed. Thanks!

Parts:
LCD
https://www.amazon.com/SainSmart-Serial-Module-Shield-Arduino/dp/B0080DYTZQ/ref=pd_sim_107_7?_encoding=UTF8&psc=1&refRID=P0Q15DSBN84Z90G5Y3XG

USB-B
https://www.amazon.com/gp/product/B00FSYBKPM/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

Arduino Uno clone
https://www.amazon.com/gp/product/B01EWOE0UU/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Switch
Any large switch will do. Recycled mine from another project.