Printing on felt is one surface decoration that I have not tried yet but hopefully today will change all that!  I am just off now for my monthly workshop (have missed all during the summer unfortunately) with the South East Textile Group and apparantly printing is what we will be learning, specifically printing on felt or so I believe.  Luckily I have a plain green felt rectangle in my stash and I am hoping it will be fine to try on this, some of the other members are bringing along commercial needle punched felt and possibly some hand made prefelt as well.  I will also have access to a good printer which the group owns so I am bringing some JetFix paper as well.  I want to print on to muslin and gauze and then incorporate this into some experimental nuno as soon as I have a minute early next week.  Anyway, off I go, I will update you on how I get on over the weekend.