Buy several playing card pkgs at the dollar store and create a wedding banner! 25 DIY Valentine's Day Decorations cute for photography backdrop ! (Banner with cards but for game night party) Or maybe an Alice in wonderland party!
Heart pillow in neutral tones. This can go with a lot of color schemes and bring some charm to a room. Possibilities: Use pieces of old jeans instead (sew around heart shape far enough inside to let it fray).