marand

I am making an I spy quilt for my friend whose daughter had twins. I am only making one larger quilt instead of two baby quilts. I figure they will be recieving all kinds of baby blankets and such. I want to make a quilt that will be more useful as time passes. It can be used as a tummy time mat soon but down the road, maybe to take on a picnic, or lay on the floor with, or whatever. I have 4 ½ inch squares and will figure out how I want to put it all together. What size would you recommend? I was leaning toward more of a lap quilt size. I am also going to make each girl a name pillow and charm square bib... It's my plan anyway..(Every time I get a novelty fabric I cut a 4 ½ inch square and save them...)
Mary Ann