Hi Robbie
Perama are a good option or you might prefer to rent a car and driver, which is what most people do. It gives you a bit more freedom about where you go and how long you spend.
One day trip as you suggested would be up to Senaru. One of the starting points for treks up Rinjani. There are a couple of options for walks in the area, taking in Sendang Gile waterfall as well as one or two more, depending on how far you want to go. Pondok Senaru is a nice spot for lunch, overlooking the waterfall.
If you are interested in the craft villages you can combine a day tour to them with the beaches in south Lombok.
Sukarara is more a case of visiting large workshops and show rooms rather than a traditional village but if you are interested in seeing traditional weaving then it is worth a stop. Further on past Praya is Penujak - famous for its pottery. Ask your driver/guide park on the main road but walk up a dirt track.Next stop about 5km from Kuta you have the traditional villages of Sade & Rembitan.
On then to Kuta and its surrounding beaches. Doing this as a day trip I would suggest heading west from Kuta, towards Mawun beach (my personal favourite) you can stop enroute at Ashtari cafe (Closed Mondays) They have home made bread and cakes as well as lots of vegetarian dishes. And a stunning view over Kuta bay.
Mawun beach for a swim and a cool down and then back to Kuta if you have time for a coffee or a beer before heading back to Mangsit.
Hope thats a start anyway for ideas for you