Implementing a sensory curriculum

As my students are new to school and routines, I am working on extending the time they will engage in seated activities. As part of my writing, handwriting and math's programme i implement sensory based learning activities as well as seated work tasks so that students who are unable to focus for long periods of time get a "sensory break".
There are heaps of ideas on Pinterest for "sensory tubs". This week i put the "letter of the week" in a tub with jelly balls (can be found at most $2 shops), and words we are learning from our word wall in shredded paper (purchased from looksharp). Other sensory tubs i have used in the past are:
-shaving foam
-flour
-colored rice
-sand
-sago
-kinetic sand