Horse chestnut.
Possibly an American chestnut.
The nut with the hardest shell is the macadamia nut. It is difficult to crack because the edible part is stuck to the inside of the shell.
Tom Thumb Cactus is a prickly plant.
Cactus
Rambutan fruit, Lychee fruit, Rose Hips
briars and berberis, very prickly !!
cacti
cactus
The Thistle.
The fruit of the cactus is commonly known as a prickly pear or cactus pear. It is a sweet and flavorful fruit that grows on certain species of cacti.
Cactus