There are many special symbols and other characters you can display that aren't on the keyboard. Try this:

 CLS
 PRINT CHR$(1); CHR$(2)

That prints a couple of smiley faces. There are plenty of other characters too. This program will show you many, but not all of them:

 CLS
 FOR I = 32 to 255
 PRINT I; CHR$(I); " ";
 NEXT I