Cheap way:free entry
1) Huang Ta Sin 黄大仙 temple, take MRT alight at the station 黄大仙
2) Clear waterbay University Technology , take MRT to LanTian 蓝田station, change to bus bring u up to university at Clear Waterbay. Very nice picture up there
3) Or simply at the TST area
4) Times Square for the XMas decor. Take MTR to Causeway Bay.