Could do with some replacement / spare bulbs for the tree lights.

Best place for the bulbs, and if need, a full set of lights??

I remember as a kid the hassles we went through replacing bulbs. Nowadays I just buy the ones with the tiny lights that change colour & pattern. Not expensive & no such thing as bulb changing. Good luck on the spare bulbs but you could try Kee Hin on the bypass as they would be the largest electrical supply shop in Phuket.

Doubt you will find spare bulbs. Cheap enough to buy a new set. Big Tesco/Lotus usually have sets, I would guess HomePro have some.

House and Home going towards Central has 100 LED's (multiple colors) for sale at 120 BHT per box.

No spare bulbs, but with the Thais loving their lights in all colours nearly any shop will sell X-mas lights and decorations.

Rawai hardware has sets of 100 or so for ฿55

Big C and Lotus always have the stuff. I was in Superp Cheap ( the big one) and they had a hyge slection in the promo area near to the ATM's You know when seasonal stuff goes... Like squite guns for songkran etc. Enther thru the food court area and just past the security check oyu see them... Mahk Mahk and mai pang!

Rawai hardware has sets of 100 or so for ฿55

I love Rawai Hardware. Very honest, one price system and good english. I broke a big pair of garden sheers. The were about 700 baht and they let me take two the the 350 bhat ones. The sister (yo0ung ladyu very nice, laughted. Papa you big boy.. can break me..... We go now???????