The number strip was part of a decal stuck to a trip switch (?) found in the junk pile at work, and the curved plastic cover is part of a plastic tube dental drill bits come packaged in . The wife grabbed a handfull from the dental practise she works at 12 months ago. She thought I may find a use for them one day. She knows me to well.
Always had a habit of building stuff from what I can re cycle, the three prongs on the front are made in part from the inner workings of cig lighters.