HI Scambone, thanks for the lovely compliment!
I made all the window clings by downloading colouring pages from the internet, then using a paint programme to colour them in. I got the window cling printer paper from ebay, but I believe it can be bought from staples?
I went a bit Dis crazy and wanted all my window clings in lime green

My photograph of my door didn't turn out well which is why I didn't post it, but I got some magnetic printer paper and printed my door sign, which just stuck straight to the metal door at POP. I got some lime green post it notes to put on the door for people to sign. At the end of each day I would take down the post-its which were written on and put fresh ones up. I have lots of signed post it notes now to add to my scrap book.
One tip I have is about the LGMH, I read that the best way to get them off the card was to soak them, which I did.. but,, this made them very thin and my mickey heads that I used for the garland curled up once I put them in the window, so I would avoid soaking them and just cut round them to give them a bit of stability.
Hope that helped?
Have fun