The emoticon icons used with the Local Studies programme were drawn by the children and then re-created using the programme Symbol Draw. Unfortunately this programme (or at least the version I possess) is feeling a little dated now and I was unable to import pre-scanned images. Instead I had to re-draw each symbol using the simple draw tools provided in the programme.
My next step will be to explore using the children's icons with Google `My Maps' as I know it is possible to import new icons from scanned jpeg files into it.
8 hours ago