Let's talk candle-to-cake ratios: Make sure your cake has enough space for all the candles you're going to need. Or, if you want to play it really really safe, you could give this card! Use your smart device to scan the candle inside this card. Make a selfie video and upload your video. When the recipient (read: old person) scans the code with their smart device, they'll see the video you made just for them.