hey there - I've got another oldie but goodie for you today - an airplane slider card that would be perfect for a little boy's birthday. I used a dimensional sticker airplane and added a staple to the back. You want the staple to be a bit loose so there is room for the paper to slide. Thread a curved strip of cardstock through the staple and then attached the strip to the card front - easy peasy slider technique.
and slides up to the top.