So, how did she do this? Nikky used remote bluetooth (ergo wireless) speaker which meant it was easy to hide it in the Giggle Weeds without trailing cables etc. The bluetooth could be operated via either a Wiimote or wireless bluetooth keyboard. Nikky programmed the Quirky Qwerty (TM) with silly noises and phrases using Soundplant software and programmed the Wiimote with Osculator software. Sounds pretty complicated to me, prefer Nikky's explanation of how it works: "using magic supplied by alien space rabbits".
Bottom picture: Nikky and Ash back at Ludic Rooms HQ busy working through some code. (Well, I'm guessing this, as I wasn't actually there.) Nikky has her 'Giggle Weeds' in her left hand -in her right hand appears to be a very interested snake.