First three pictures: I have a bunch of toilet paper and paper towel tubes that are great for crafting and other projects. I also have longer tubes from wrapping paper, etc. some of the long ones are quite sturdy. Free.

Last two pictures: I got a bunch of new short cardboard tubes that sold to tape manufacturers to put their products on. Think duct tape size. they are sturdy and great for projects as well. I've done all kinds of projects for church activities with them. Free