She handed me the old thingamy and asked if I remembered how it worked.

I found a box of old thingamies in the attic and couldn't remember what half of them were for.

Can you hand me the thingamybob from the tool drawer?

I tried to fix the old radio with a thingamyjig I found in the drawer, but it still wouldn't turn on.

I found several thingamybobs in the drawer that might be useful for the repairs.

I found some old thingamyjigs in the attic that might fix the radio.