Lots of great Montessori inspired activities for a 1 year old!
Lots of good home made DIY activities for Cs age.
Fine Motor: Transferring with balls, a container, and an ice cream scoop
(For ages 15 months to 24 months, PHG 3.1)Color Sort
Montessori baby resources from birth through 12 months. Montessori at home from birth.
Pom pom drop activity for toddlers. Great for fine motor skills and developing cause and effect. So easy to set up so start collecting your cardboard paper tubes.
Pasta Threading - a fine motor activity for toddlers
Growing Play: Kitchen Puzzle (could use anything)
DIY crafts: Sensory board voor sensopatisch spelen met baby's en dreumesen - Mamaliefde.nl
Montessori Baby Toys - Five Pack of Toys. $48.00, via Etsy. Something for Jonah. He's hard to buy for :-)