Yesterday's post got me in the mood for origami, so I tried out the instructions in Samuel Tsang's video on how to make 3D paper hearts. The lighting isn't great, but I figured out the steps, thanks to Samuel's pen. The folds aren't difficult; it's just hard to see them.
Each heart is folded from one square of paper. The openings in the sides make it easy to string them into a garland. Just think— by Valentine's Day, you could fold hundreds. Thousands. You could have a heart garland long enough to wrap around your house a few times.
If you need more Valentine ideas, try one of these other DIY projects.