This is my first ever "quick tip". I guess, for someone with limited experience like me to want to pass along this tip highlights how awesome it is.
For less than a tenner you can get a big 50g bag of goodies filled with thousands of tiny parts. These can be used for bionic limbs, pistons, nuts and bolts and especially useful for industrial bases. Many of the commercial resin bases you see use these for their master copies.
Here's a quick example of how I put a bag to use with the connection at the side of an Iron Jaw.
Head over to ebay and grab a bag today.