Using Simile project's capabilities, scrape the information of one of the big portals: reklama.lv, dzivoklis.lv or nams24.lv and convert it into some RDF format. Write SPARQL queries against that data to produce some input data for KLUCIS (e.g. each district within Riga is represented by some "HorizontalRow" containing rectangles of various sizes depending on how many rooms each appartment has.).
This could make simple diagrams with graphical representation of how much space is available for sale in Iļguciems, Zolitūde, etc.