Both my DC went to a montessori nursery so I'll just list the toys/activities they had on the shelves there. Many you could easily put together yourself as the idea is to teach them skills they'd need to use on real life home objects.
Pyrex jug with something like dried beans inside that you can pour into a container/pot.
Two small pots, with dried peas/beans in and some small tongs you use to pick up the beans and transfer to the other pot.
Best activity was the locks and catches board teaches them great burglary skills! . You can buy these or make one yourself with items bought from a DIY shop.
Wooden frames, about A4 size, with fabric stretched around and fastened with a zip, or big buttons or velcro.
Shallow wooden or plastic trays with perhaps half a centimetre of sand in the base to draw letters and numbers in, so the colour in the base of the tray shows the pattern they drew.
Relief 3D puzzles of landscapes like hills, rivers, sea that they can learn the names of.
A5 cards with numbers or letters on with sandpaper cut to the shape of the letter or number and stuck on the backing card. They can trace them with their finger as you say the letter or number.
Threading activities. Thick cardboard with long coloured laces you can thread through holes, tied in a knot at one end. Short pieces of drinking straws in a pot to thread onto laces. Dried pasta tubes work as well, or wooden beads.
Not sure if any of that helps?! You might have meant toys you can just buy.