Anyone can make a photo collage, and it costs nothing. Here they have to work for it: rub the wax seal until it cracks, then take the thing one beat at a time, each beat asking for a hand.
Send the link a week early — it opens on a clock counting down to their birthday. On the day they unwrap the box themselves, then walk it scene by scene: the letter, the album, a video made just for them, and the closing wish.
A keepsake book taken one step at a time: crack the wax seal to open it, drop the needle on the record to start the music, drag the slider from then to now. Every step asks for a hand.