These are but very common and basic item... isn't too $$$ and can be find anywhere. What blower is a matter of personal choice... some like big, some like small. As for Lenspen... I prefer the org brand - which is Lenspen... :bsmilie:
1) 3 set Lenspen: 1 for compact camera lens, 1 for the LCD and 1 for DSLR Lenses. bought 3 in a pack for around $23 at some shop in peninsula
3) Spectacle cleaning cloths for cleaning the lens and camera bodies.