We have already answered a similar question for you. It's your job to take our answers and apply them to all other scenarios you worry about. This is important for you to do because they will not allow you to keep asking non risk questions on this forum. Rightly so as we are volunteers and answering the same things for the same people becomes tedious. Risks for HIV: 1. having unprotected vaginal sex (penis in vagina without condom, penetration required). 2. having unprotected anal sex (penis in anus without condom, penetration required) or 3. INJECTING drugs with a syringe others are injecting drugs with. These are the only three risks. Please right these down or save this post to refer to them to remind yourself.
HIV is not transmitted on any objects because AIR inactivates the virus. Air on the end of a needle would inactivate the virus. Being STUCK with a needle is not a risk. Because the end of a needle/syringe has been exposed to air. That is DIFFERENT than INJECTING with a syringe. You also can't touch HIV. Eat HIV. Or HIV anything unless you did one of the above three things.