There's a great craft store in Perth (near Ottawa) that my wife and I visit about twice a year. They have a whole display of small wooden bits like those pictured above. Stuff like this is hard to come by at a reasonable price but this store has a huge selection for great prices. I'm planning on getting to building some new large dioramas that are more planned than what I've made before I'll be printing them and selling them as prints when I get the first comics published.
Wait, what? Comics? Yes, heard over to the Homeless G-Men blog (see side bar) and have a look at what I've been doing for the past six months. Also coming up in November will be my annual show at the Cameron House (Toronto) so head over there soon to see some finished paintings.
Here's a link to the store's website http://perthfabrics.com/