Sensory bins (with water, beads, Orbeez, rice, beans, sand, etc! Use what works best for you!)
Slime, floam, and Play-Doh
Water tables (works best outdoors)
Painting
Bubbles and straws, glow in the dark paint, or fingerpaints can make this more fun!
Stroller toys
(examples here)
Taggies blankets
Cloth baby books
Blankets
Toddler or baby blankets are awesome for character prints and are portable!
Security blankets or "lovey" blankets are also easy to take on the go. I have a few!
Sensory friendly clothes (I have lots of examples in the clothes and shoes section of this site!)
Plush toys
Some cool ideas I've found are vibrating plush or pillows, sequins, or plush that glow!
Fidget spinners
Fidget cubes
Rubik's Cube
Pop-Its or dimple toys
Stress balls
Rubbabu balls (velvet flocked sensory balls)
Toy cars
Marble maze fidgets (another easy DIY if you can sew!)
Tangle fidgets
Stretchy noodles
Worry stones
Twiddle (my personal fave is the Twiddle Nathan! There's a Classic purple and Sport green as well as a cat and dog.)
Weighted lap pads
Weighted plush