Eberhard Faber's Soft FIMO oven-hardening polymer modelling clay. Great for all sorts of modelling, including detailed and filigree work. Slightly softer than FIMO Classic, so easier to work, but still hardens in a standard domestic oven.
These sets are great for getting started or practising on a small project, and make especially nice gifts. Each set contains 4 half blocks of FIMO Soft (or 3 half blocks plus accessories). There is something here for everyone.
FIMO Soft blocks are also available individually in 24 standard colours and 24 effects colours, all intermixable. FIMO Classic original modelling clay is also available in 24 colours.