2 minute DIY fine motor skills toy : plastic cup with lid and whatever objects you have at hand. poker chips are great. simply cut the lid with a sharp knife, the opening being just as needed to pass the objects through.
Fantastic Montessori Ikea Hacks!! (how we montessori)
Learning basic sewing with a polystyrene plate, yarn, + plastic needle. I remember doing this with craft mesh when I was a kid and then graduating to sewing buttons by hand onto little pillows and pockets.