For the 2 1/2 year old: fish, with metal rings and paperclips sewn into their mouths.
Because if your only lure is a magnet, how else can you catch them?
A fish pond.
For the youngest: wee blueberry muffins to "bake" in his little kitchen.
He needs ingredients. Here is some pasta and broccoli. Had to stitch the noodles together so they wouldn't end up all over the house.
The process is closely regarded.
The making of all of this stuff has been great entertainment. Not sure how it will go over. "Wahooo I got some potatoes!!!" said no one ever. But it really doesn't matter because I've had my own fun with it. And that's good enough for me.