I like this type of thinking. Use what you have and the ressources you have access to, instead of being stopped doing stuff, just becauce of an "...if i only had *insert random term here*" :)
Great ideas and suggestions up there, too!
Life is strange. I am currently in a train-the-trainer course for Fraud Docs and Counterfeiting Techniques. And our assignment last night was to make several counterfeit documents using simple tools like Paint and such. And I actually learned stuff that might be helpful in trying to make/edit things for RM assets. I don't think that is what the course developer had in mind!