How about something with Stag Beetle in the name (Lucanus Cervus if you want the latin!)? My 7 year old son looks forward to walking along Stanstead rd during late May/June as it seems to be a hotspot for them. As they're becoming rarer and FH has a reputation for them it might be nice to use them as a logo or emblem too - very dramatic! Just an idea - perhaps you want something a bit more horticultural and less nature reserve...