ok, so I inherited a whole craft/quilting room.. a lot of things are older items... Here are a couple I have questions about.... One is of these little bobbin type things.. they are filled with some sort of thread and the "bobbin" is paper... What is this exactly? ... the other are the iron on's... are these to old to use? After awhile do they need to be thrown away... I would say these are really old, but not to sure! Thanks for your help!