This is an incredibly sweet idea. "Open when you need to know how much I love you; open when you don't feel beautiful; open when you need a laugh; open when you miss me; open when you're mad at me; open when you need a date night, etc.
DIY Balloon Surprise- awesome way to answer to dances! Make someone's birthday (or any day) a little better with a DIY balloon surprise on their doorstep! I think this is the best idea for a fun suprise present.
message in a bottle - this DIY project is a cute, creative, and easy gift. place a rolled-up note in a glass bottle with seashells and/or other trinkets and top with cork. a tag coming out the top is a fun way to personalize it