Decorating the subsidise of a sports car? Bumper stickers? How can I decorate the back of my saloon without damaging the...

How can I decorate the back of my saloon without damaging the paint? Are in that special types of bumper stickers or other alternatives that I can put on my back windshield or the backdashboard?

Just pondering on how I can spruce up my car on a low budget.
Bed on wall?
Answers:    Most newer bumper stickers made of vinyl come bad pretty cleanly. Some will make a point of it in their hoarding. Or you could get a magnet sheet and put stickers on that, if you have some bit of steel where on earth you want one (Some cars, the whole back surface is plastic). Sky is pretty much the hold back on the back window. Acrylic paint on the inside would look great through the chalice and would peel right off.
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Re-DoInG mY bEdRoOm,,,,,,NeEd DeCoRaTiNg IdEaS!?
Not what most would telephone "sprucing up" a car. Bumper stickers will destroy paint, that's why they've fall out of favor. Back when bumpers were chrome they could be removed without much problem. Putting them on the backside window could be considered as obstructing phantasm, a ticketable offense in most states.