If your keyboard doesn't have a dedicated numeric keypad but has one as a sub-function of other keys, press Fn or NumLock to activate the numeric keypad.
Even if the keys are unlabeled, the keypad will still work when Num Lock is on.,,,
Click on the location where you want to insert the symbol.
Press Alt.

,Press 1 on the keypad for ☺.Press 2 on the keypad for ☻.
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