When I was in Budapest I visited - totally accidentally - a shop called In Situ which is located in Budapest's center, next to Astoria square at Múzeum körút 7 in a patio and sells beautiful wall stickers.
Here is the shop
And here are some of the nice wall stickers they sell
The shop sells actually a wide range of design objects like bags, hanging clocks, jewels, and yes....my beloved lomo camera as well!!!
Take a look at the shop's website at http://insitu.hu/ws/index.php?main_page=index&cPath=73