Another tip is to try talking cards. The moment you open it, it would say 'Happy Birthday' or some sweet little words. Some times you would come across interesting things like a cat meowing or a dog barking. They are also real fun. These players are battery operated so it is another item to keep in the list. Likewise other interesting idea is to take a musical card. You can choose among the birthday tune and some happy kids' songs. At times, you may also gift a card that plays classic songs.
If you don't know too much about the person, but you know their birth date then you can still make a collage all about them! Consider birthday card ideas using their zodiac sign, precious stone for the month of their birthday, and if you know the year they were born you could also include their Chinese zodiac sign. If you still need some filler space, then find out some interesting facts related to their zodiac sign and print or write them on the front of the card. Everybody loves to read what they're all about and it could be a fun conversation piece so you can get to know the person better!