You can have a casual wedding and still need or want to send out Save the Dates. They are not always necessary, but are definitely welcomed by guests who have to make travel plans and/or perhaps multiple reservations, such as for airlines, trains, and/or for the hotel.
If you're going to include a Save the date magnet, it will be helpful to include your names and/or photo, and your wedding date. Then your guests can have a fun reminder for your wedding, and also a keepsake for afterwards.
You can choose from Save the date Magnets, by CherylsArt, that have the name and date option and/or photo options. You can also choose from round and square magnets. The round ones come in a choice of two different sizes.