How to Create a Arduino Shield Very Easy (Using EasyEDA) : 4 Steps - Instructables
How to design a Shield ? - Project Guidance - Arduino Forum
Protoshield Plus lcd kit
General purpose board using Arduino MEGA PCB template, with Arduino Nano controller board, LCD+Keyboard, DS3231 RTC, NRF24L01 radio, and DS18b20 temperature sensor - Share Project - PCBWay
16×2 LCD Display Shield | Benn Thomsen
GitHub - adafruit/Adafruit-RGB-LCD-shield-PCB: Eagle CAD files for the Adafruit RGB 16x2 Character LCD + Keypad Shield