Silicone Teethers & Toys:
The Mobi Zippee will be a hit with a 12-24m child (I’m 39 years old and enjoy it as a fidget toy!). Whereas the 6m baby would mostly just teethe on Zippee and turn it around to look at it, the 12m can now use their motor skills to pull the bumpy silicone strings, which is endlessly entertaining.
The 12m+ can likely now spin the Whirly Squigz themselves whereas the babies likely relied on an adult to spin them as they just watched.
The pipSquigz will now be more than a rattle – the child is now going to be able to use the suction feature themselves.
The Poppies becomes more than a teether as the toddler can now manipulate the suction feature themselves. My 6 year old nephew still loves playing with Poppies in the bath (have a contest to see who can throw it and get it to stick to a certain “target” area of the tile wall). All of these silicone toys are great in the bath as well!
The stuffed buckle toy that I have listed for 2+ can be used for 12-24 months (most of the toys in that category are too hard for a 12 month old, so I chose to group them starting at age 2).