Paper craft is the art of cutting and folding paper into fun shapes and a great way to keep yourself amused when it's just too cold or rainy to go outside and there is nothing good on TV. It's also a great way to amuse siblings or baby sitting charges as long as you stick to simpler creations.
Cubeecraft provides fun full color templates that you can print, cut out and fold into your favorite video game, movie, cartoon and book characters, such as Mario Bros, Scott Pilgrim, various incarnations of Batman and the guys from Ghost Busters. They also have various inanimate objects, such as the mushrooms from Mario Bros, and pretty much every video game console. Each item is marked with a difficulty level between one (the easiest) and five (the hardest) scissors.
Another great papercraft site is Boxpunx. They have all kinds of crazy and fun unique monsters that you can cut out and create. They also have selection of blanks; the cutting template is there but you can create your own designs.
A thicker paper is recommended for this; I used 24 lb paper. You can use regular paper, but it is much harder. You can use scissors to cut everything out but it is much easier to use an exacto knife to cut the slots, and also make sure to put cardboard or some kind of mat underneath your paper, so you don't cut tables or floors. Make sure to double check the printing directions on the site, if you aren't careful you could end up losing tabs.