I'd use them in card-making, frame larger ones for a grouping, give as gifts, sell in commision gallery, ask a restaurant if you can put them up for sale (away from kitchen oils & odors) - they often change out art in our area & its all for sale, book covers, purses - the possibilities are endless!
You are an artist - I may have to suggest this to my DIL who is an artist & wedding photographer - she may want to make covers for the wedding books she does.