Other versions of the Irish euphemism, yoke, for the word thing (or their variants) are phrases - all made up on the spot, generally when the speaker is frustrated, frantic, annoyed, and basically incapable of thinking straight so cannot form a complete and coherent sentence - such as:

yokeymajig
thingymayokey
thingamajig
thingymayokeymajig
feckinyokey etc..

There exist of course other variants we Irish tend to make up on the spot, but I can't think of any other at the moment. Feel free to add to this, or /msg me to do so :)