To continue on the themes of Keeping Children Busy During Supper Preparation, and Not Quite Martha ways to do things, we present the D2 file.
This is a small woven wastepaper basket that sits by the kitchen door, close to the desk where we process junk mail and such. Into it goes only such items as are safe for D2's consumption: junk mail, primarily, plus a few clean styrofoam vegetable trays. No plastic wrap, no used kleenexes. It gets emptied with the rest of the trash and refilled as new things come to hand, so the contents are always varied.
D2 is then permitted to dig through this at will, ripping things up, chewing them, and generally having a fabulous time. It might keep him busy and out of the kitchen for all of three minutes.