Have you ever played with modeling paste or joint compound? Joint compound you can buy at home improvement stores thus paying a lower price than you would for molding paste (Golden) or modeling paste (Liquitex).
This textured painting is one of my first ones playing with molding paste. I had it on hand one day at the studio and started out just trying out different textures with various materials around the studio. Here are some before and after pics of the piece before it was painted: (click on photos to see larger image)
I used the end of a paintbrush to create the swirl that became the sun. Then painted with acrylics I had on hand and rubbed gold paint onto the piece once it was dry.
I dragged a hair pick through the paste to create what became the river. I did not plan the outcome, just kept trying various tools.
One of my favorite texture tools is punchinella, the stuff left over when sequins are created. It usually comes on a roll like a ribbon and can be used like a stencil to apply the paste through. The blue section I simply used a palette knife similar to the way you would create texture with frosting, with an up-and-down motion.
The little squares you see next to the tree branches was done by using a very open-weave fabric. Place the fabric on the canvas and push the paste through the squares, then pull away. It creates a very raised surface.
I have more texture paintings/techniques to share. Let me know in the comments if you ever use this type of technique. I would love to see what you have done and will link back to your blog or website if you provide the link.