If you are hosting an event, you might like to have a sign-in list, so that each attendee signs in. This may be beneficial (or even required) for your Public Liability Insurance, so there is a record of who attended the event.
You can download this sign-in sheet, which has spots for 25, 50 or 75 attendees (1, 2 or 3 pages) – the spots are numbered so that you can easily count attendees and/or run a door prize where you draw numbers and the corresponding signed-in Hatter can win.
These sheets are blank so that attendees write their own names in, however you can fill out the attendee list prior to the event and have the Hatters sign in as they enter. If you download the .doc format file (rather than the .pdf), you can edit the file to suit your own event.