We call this "the net," and it is the coolest thing I've found for my baby since the Boppy. You drop grapes (Azlan's favorite), apples, pears, whatever in this net and the baby gums and sucks on it. He actually gets real food without any choking worries because only swallowable pieces come through the holes in the mesh. We actually put roast beef in one time and he loved it!
They come in packs of 2, and I've only seen them at Target, for about $5. We actually bought two packs because it has to be washed with every use. There's no rinsing it really well and using it again. I love taking this to restaurants because we can feed Azlan his baby food while we wait for our meal, then drop some of our food into the net and keep him occupied while we eat. Love it!