Why, everywhere, of course! I mean evvvvverywhere. I’m speaking about images of the Buddha here.
You can expect to find him represented in a lot of the usual places – shrines and walls of people’s houses (the purpose is similar). But then also in some places you don’t expect, like billboards. Then there are some that can be quite disturbing to people who hold an image of the Buddha as sacred (and they number in the hundreds of millions too). For example, on this trash can, seen on Telegraph avenue in Berkeley, California.

Another common place to find Buddhas images in countries not traditionally Buddhist is the bathroom – unimaginable in a Buddhist culture.
I can see why people do this: In a century that saw bathrooms go from a place you want to spend the least time in, to a trendy, cool part of the house, it’s natural to want a peaceful setting. And there are few sights as calming to behold as a person sitting in meditation. However, can’t one be a little sensitive to those who view a buddha rūpa as more than more decoration? Whatever, one does in their house, at least avoid such bathroom decorations in public places where such people might have to come upon them, like in restaurants and spas?
Btw, it can be go beyond space decoration, as this toilet seat shows.

I have seen a Buddha head holding up shoes for display in a shoe store in California. Numerous images of the Buddha on shoes, like this one. All unimaginable in traditionally Buddhist countries. There have been some concerns about similar use of images of the Hindu deity Ganesha on toilet seats.

This has been discussed previously in many corners of the ‘net, such as on this thread. Many have pointed out – in a Western country, would you encounter a sacred symbol from Christianity, Islam or Judaism in a toilet? Then why so many Buddhas and the occasional Ganesha. Of course, on these threads, you will also find several people claiming that the Buddha himself would not be offended and that people objecting to this don’t really understand the “real” teaching of the Buddha. And that whole ball of string about “you are confusing Buddhism with a religion” etc. and a repetition of the supercilious view that Buddhists from Buddhist cultures don’t really understand the Buddha’s teachings – and their objections arise from such ignorance.
What a strawman argument, the one about the Buddha being offended! As if anyone said the Buddha could be hurt by this…the point always was…are you being disrespectful to Buddhists. Furthermore, there are accusations of intolerance aimed at those who aren’t chill about this – a bit ironic.
Oh, somewhere in this gamut, are gardens. In some cases, they are mere garden decorations, in others, they are outdoor shrines, tended with respect…Just know this – the practice of religious heads as decorative items in western gardens began in colonial times, which colonial officials in Asia bringing priceless art works and broken heads, the heritage of the people of the colonies, back home to Europe to display – not out of any reverence for the deity, but as decorative pieces and proof of the travels and worldliness of the “owner”.
References:
Inside the Wonder House: Buddhist Art and the West, In Curators of the Buddha, edited by Donald Lopez. University of Chicago, 1995.
Other related reading.
The Buddhist Icon and the Modern Gaze, Critical Inquiry, Vol 24, No 3