Really cute- Children's plant / garden workbench. This teaches so many concepts. Not sure I'd want it inside, but what a great outdoor activity for kids of ALL ages (well, maybe not during the eating dirt stage!
Activity board (also known as busy board, sensory board, touch board, latch board etc) is an excellent fine motor development educational toy in the best principles of Montessori. This activity board (Best Christmas Presents)
The rule of thumb for the number of toys you should have for children out at any one time is That isn't a lot but just watch what happens with your child's attention span and learning when you reduce and showcase what you have!