I recently bought the Frozen Light-Up Karaoke Machine at Target [target.com]
(going in and out of stock
) for my nieces and was in search for an extra microphone, when I came across this:
Barbie First Act BR924 Vocal Dynamic wired Microphone [amazon.com]
on Amazon as an Add-on item for $6.26 - 20% Prime member discount = $5.01 - expired, price now $6.82
Of course, add-on purchases require spending $25 or more on Amazon, but that's not too hard this time of year.
Also, since the machine only comes with a 2-song disc, and I don't want my brother to immediately lose his mind, I also picked them up an extra CD-G ... Disney's Karaoke Series: Princess Vol. 2 [amazon.com]
for $6.49 as an Add-on item at Amazon. Not the best deal in the world, just more of a gift idea.