Fill a glove with beans, pearled barley, rice, etc. Give a few pats and slip quietly away. This was a LIFESAVER when my daughter was an infant. I would nuke mine in the microwave to make it warm and helped soothe her too.
Brightly painted frames, cardboard letters and loud scrapbook paper. (or, wooden frames, cardboard letters and muted scrapbook paper, which is what I was actually planning to do on the nursery wall once the baby comes and I know initials!
Make your own coasters- tiles, adhere picture/paper to tile with Mod Podge and let dry; Spray a coat of clear spray paint and let dry; attach felt pads to the bottom. Doesn't have to be beer coaster either!