we used Par 38's, essentially they are plastic spikes with lamps on them. They are for outdoor use , the lamps come in various colours, we used greens , blue, red and plain , very effective in the garden. We used SWA ( steel wire armour) cabling for safety reasons, as it is buried undergoround. The spikes can be place amongt shrubs etc. or behind say like us a Tree Fern. Looka a treat at night, like an extension to the dining room.
The lamps can swivel up or down, and usually are "flood" type rather than a "beam" type.
Downside is that its an electricians job rather than a DIY , from a safety point of view, on account it being subject to weather /rain etc.