You don’t need to go all the way to Tokyo, I’m pretty sure I have seen (and laughed at) those in Daiso here in the US. If you haven’t been to one, you need to find a Daiso, they’re they Japanese dollar (ok, Yen) store and full of products like that.
Only 11 stores in the USA though: http://www.daiso-sangyo.co.jp/english/stores/overseas.html Compared with 2500+ in Japan.
