The first one, I would be cautious with. The 'rope' would be my concern.
The coconut hut, besides from the rope again being something I'd be worried about ingesting, it could also lead to a broody budgie. Even without a mate, your female could lay eggs and even though a healthy budgie can lay an egg and it not be an issue as a one off, it's also stressful on their bodies and is best to be avoided is possible.
The last one, I would assume as it's for birds the bells with be stainless steel. See if you can find out. The little balls themselves should be fine.
There are plenty of cheap safe toys for budgies.
I avoid anything with rope as a rule and if I do get something that has a little rope, it's a strictly out of the cage toy.
Kabobs are ideal. I like to get loose kabob pieces and stuff them into a food cup and the budgies love to chew on them.
I also buy lots of toys from the Natural Bird Company and they do balsa wood toys which the budgies just go through like crazy.