I love getting the kids involved in Valentine's Day Crafts. Here is one that I did with my son two years ago. It was so easy for a 2 year old to do. I traced his hand and arm on brown card stock and cut it out. Then i used heart punches in two sizes to cut out light pink and hot pink hearts. I put sticker tabs on the backs of all the hearts and let him put them wherever he wanted.
He went for a falling leaves style - so cute. I put green card stock on the bottom of the page for the grass and he picked out a picture he liked so I could put it on the page.
This year we took an embroidery frame in the shape of a heart, used some thread to attach paper to it, and he and I both put our thumb prints on the paper to make a Love Bug. He added the googly eyes, the bow, and drew the legs. I wrote the Love Bug 2014. I love making a project together with him.
Another craft we did together was for preschool. It was this heart that was supposed to have our family in it. He picked out the papers from a 6x6 paper pad, I cut them and he told me where they go. Then he picked out the family sticker and hearts and put the glue on everything. I did the stickers with our names.