Here are the three easiest ways that I know of:
1) Using a projector to create a mural
You can use one of the old-school projectors that your teachers used to use. Or if you have a projector at work, you can hook it up to your laptop at home and project straight onto the wall that way too (this also skips the 'creating a transparency' step).
This is the least expensive method (provided you don't go out and buy a projector!) and the primary benefit is that you have complete control over the creative because you can use any image that you like. The drawback is that it can take a lot of time if your mural/images are detailed and if you aren't comfortable painting it may seem a little daunting.
2) Using stencils
There are a variety of stencils you can buy online, at home improvement stores, craft or home decorating stores. The trick is making sure you aren't using a ton of paint because otherwise it seeps under the edges of the stencil and looks really sloppy.
This is a great option if you're looking for a very specific pattern or a repetitive pattern that you want to customize (colour/placement). Painting with stencils can be time consuming, require a fair bit of patience and may need you to be very detail-oriented.
3) Using vinyl wall decals
Vinyl wall decals are images that have been pre-cut into vinyl and are placed (by you) on a wall. There are a ton of options out there and some companies will customize decals to suit your needs. The cost varies by manufacturer, size and originality of the design.
I personally used a vinyl wall decal in my daughter's room when we moved into our house. What I like best about them is they're the fastest way to create a graphic image and you know exactly what you're going to get. It took me a long time to find exactly the right one, but I eventually found it on Ebay and absolutely LOVE how it looks. Plus, it's easy to remove to update the room later on.
|Avery's crib & tree decal|
I put the decal up by myself and wished half way through I'd waited for DH to get home to help. I also should have spent a little more time reading the instructions before I got started (there was about 30 minutes of profanity as I unstuck pieces that got stuck to each other instead of the wall because I'd been in a rush to get it done - luckily it ended up working still!)