hi there, I am a Recreation Therapist, and have a special interest in play. If you are looking at toys and games for new borns, try and get some visual stimulation (black and white for, say, first 3 months) .. try www.envisagedesign.com/ohbaby/infstim/graphics.html for examples. They're free to download. Then move into lots of coloured patterns from 3 months on ... I've just bought some material and made some cot surrounds (make sure of safety with ties and tendency for surrounds to flop down into cot). Lamps taht throw light patterns are good, an overhead mobile/cot gym, and lots of auditory stimulation - music like Vivaldi 4 seasons and nursery rhymes etc, rattles. BUT most of all, your voice singing to them and rocking them and playing with them is most important.
I hope that gives you some ideas - quite inexpensive really ... which is what you want as they grow out of stuff so quickly.
just starting