Another mural...

So, Little Boy has been hassling me for a while now.  He's been lying in bed asking me to take Charlie and Lola off the wall, and paint Peppa Pig on there.  It went on for quite a number of consecutive nights.  'Want Peppa Pig'.  'Paint Peppa'.  'Don't like Charlie and Lola'.  And on it went.  So I eventually got around to actually doing something about it.  (Don't worry, we addressed the not liking Charlie and Lola by watching it every night for a while.   He soon changed his tune)
I used tester pots of paint, so it cost somewhere in the region of a fiver.  If you happened to have leftovers in the right colours, you could probably use them.  I used proper wall paint, not kiddy paint.  Here's the morning's work:

The virgin wall.

Same method as before - trusty OHP :)

Which allows you to do this!

Add some more outlines and the mud and flowers

More facial features...

Limbs and the beginning of colouring in.

And this is how it ended up.

We even splashed out and bought a George Pig duvet set.

So, all in a morning's work.  I did it on a morning where both boys were out, otherwise it would have taken considerably longer!
If you don't have an OHP to hand, you could try asking to borrow one from a local school or church.  If you do a good job and show them the results, they might even be happy for you to do a mural or two for them!