The things I use the most here are a sharp kitchen knife, scissors and veggie peeler. A good kitchen knife is essential for slicing fruits and veggies and cutting out shapes. Scissors are great for cutting tortillas into shapes for quesadillas and wraps, and veggie peelers are awesome for quickly peeling fruits and veggies.
I also use the tweezers and pick all the time. When I use my small plastic cutters, these are essential to get the small details out of the cutters.
Other stuff I use occasionally are my apple slicer for slicing apples and other fruit, pizza roller for quickly cutting up quesadillas, pancakes, etc. I also have a variety of scoops and melon ballers for scooping fruit like watermelon, kiwi, cantaloupe, honeydew melon, etc.
These larger plastic cutters aren't my favourite, but I do use them occasionally. The metal cutters definitely cut through sandwiches, fruits and veggies easier. I do use them for tracing shapes on quesadillas, and the plastic ones with the handles (star, heart and flower) are really good.
You can find the plastic cutters with the handles here
And you can find a huge assortment of plastic cutters here