Is my company too small to need a stocktake?

As long as you are carrying stock you are never too small to conduct stocktakes.  What you need to determine is the method and investment.  If you are a smaller organisation then a simple paper based systems will only cost you time.  The range in cost of automated systems can be anywhere from hundreds to thousands of dollars for a larger automated systems using barcode or RFID running on a wireless infrastructure.  If time is money then investing in an automated system should give you a fast return on investment [ROI].