Some easy to find favors and ones that you can make yourself are;
Wrapped chocolates with gold foil is a simple edible favor idea and you know that they will be appreciated.
You can also buy 50th anniversary candy wrappers that fit over standard candy bars, you could have your favorites!
If you are looking for a more formal favor then it is worth buying the
favor boxes, you could then add chocolates, golden flower seeds, bath
salts or smellies. You can personalize with ribbon that you have had
your names and the dates added to. The ribbon you can buy in a roll.
Gold flowers at each place setting - golden gerberas are good for this as it takes a long time for them to wilt!
A gold framed photograph of the anniversary couple.
You could make a donation to a charity on behalf of your guests and then
leave a note at each table telling them what you have done.
A cd of music from your wedding year, you could also play this at the party as well!
If your 50th anniversary is at Christmas you could have gold tree
decorations for everyone. Your centerpiece at each table could be a
branch with the decorations, or a mini Christmas tree.
If you are both keen on a particular hobby, ie golf then you could have a
hobby themed favor. A gold/yellow golf ball, or gold tees! Maybe that
was stretching it a bit too far, but you get the idea, anything goes as a