Expanding Vocabulary Using Old Greetings Cards

I'm in decluttering mode at the moment.  It's a therapeutic activity I turn to whenever I feel there is just too much stuff in the house and things are spinning out of control.  I found myself in the spare room this afternoon sorting through an old box of stationery that I brought across from England. I discovered some beautiful old greetings cards and art postcards there that I have held onto for years.  I didn't really want to throw them out, but I couldn't find a use for them as it's been a few years since I wrote a letter by hand.  Just then a little head popped up...Elijah gathered up the cards and started pointing out the different things he could see.  It occurred to me that this would be a wonderful way for him to expand his vocabulary and an interesting (and cheaper) alternative to using flash cards.