I have an old original console program from a college that I was able to write a windows CRT for and get it to show the old style boxes, lines etc. this is all done within a Windows app but it has a CRT form and all console type output is put there. It includes the blinking cursor etc.
I don't know if this can work in a Linux GUI setup but I will attach the publish part of it here if you wish so you can look at it.