Want cheap ? Shower curtain.
even cheaper than a shower curtain, one of your mama's old sheets.
Wattle and daub (go google).
There are many materials available in the market which can be used for office wall partitions. Although brick walls are traditional means of partition, most of the modern offices are looking for dynamic work environment which cannot be achieved by brick walls
As per my suggestion, I will recommend Glass Office Partitions for Offices.
Here are some reasons why is it a better and cheaper option than brick walls.
Modern glass office partitions are among the most convenient material for office partitioning. The appearance of glass office partitions transforms the look of office interiors, specially in salons, shopping facilities & reputable institutions.
In short, glass partitions helps to transform any large space into a rationally structured office which is organized as a type of open space. As the seams (a join where two or more layers of fabric, leather or other materials are held together with stitches) are practically invisible, glass partitions visually expand the boundaries of space in the office.
Also, using a transparent structure creates an atmosphere of confidence and ease, it can also help you save energy by distributing natural light throughout the office. Also, glass partitions make your business open & understandable for customers and also it helps for maintaining isolation, effectively manage the personnel, and thus tends to work as a team.
Glass partition also helps in distributing light more efficiently. Also if planned properly, it can make the interior look more fashionable which enhance the prestige of the company.
I hope this information helps.