LCD Custom Character
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You can build your own LCD characters if you spend some time with the datasheet and user manuals available
Arduino has a dedicated function here
#include &lt;LiquidCrystal.h&gt;

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

byte smiley[8] = {
  B00000,
  B10001,
  B00000,
  B00000,
  B10001,
  B01110,
  B00000,
};

void setup() {
  lcd.createChar(0, smiley);
  lcd.begin(16, 2);  
  lcd.write(byte(0));
}

void loop() {}

here is one example:  from our tool here

From the datasheet:

here is one example where a Heart symbol is created using the built-in Arduino LCD library:
You can play here at our LCD1602 simulator to get a hang of it.  Please leave a message or comment if you have any questions :)