Not sure if this would entertain a 16mo, but it keeps my extremely spirited/active (into EVERYTHING!) 12mo occupied for a few minutes...
Run some dishwater (or bubble bath) in the sink, then scoop off all the bubbles and put them in a bowl. (I use a metal mixing bowl, so the bubbles show up well.) I also give DS a smaller bowl (like one of his "baby food" bowls) to scoop the bubbles. (Tries to eat them! LOL) Best if it's on the kitchen or bathroom floor, probably.
This is how I get dishes washed, since we don't have a dishwasher. Got the idea from my Parents as Teachers lady.