Inside were about fifty badges, all of different colours, but all bearing the same letters: S.P.E.W.
‘“Spew”?’ said Harry, picking up a badge and looking at it. ‘What’s this about?’
‘Not spew,’ said Hermione impatiently. ‘It’s S – P – E – W. Stands for the Society for the Promotion of Elfish Welfare.’
—Harry Potter and the Goblet of Fire
This pinback button is 1.25″ or 2.25″ across. Or you can choose a magnetic needleminder. Pick your house color, purple for Hogwarts, or pick a custom color (you will receive an email after purchase asking what colors you would like).