It's a secret...but how?

So how is it possible for me to update you on my progress when I'm working on a gifted item? I want to post pictures but I know that the receiver occasionally checks this page. I suppose it will have to be done in words, despite words being slightly less fun. I'm knitting a beautiful pattern which is taking the form of a scarf. The pattern is called Berdien's Boxes and it's from Stahman's Shawls & Scarves by Myrna A.I. Stahman. It is grey with some dark blue accents and is coming out beautifully so far (lots of chart reading!) I will post pictures next Sunday as that is when this will be gifted--until then, no other updates except Tree Jacket is growing quite nicely; sort of like a real tree!