Transmission risk via inanimate objects, swimming and blood
Both types of genital herpes virus do not survive for long outside of the body and are readily destroyed by soap and water.
As a result, the risk of transmission via shared towels, clothing, toilet seats and the like is minimal to none (unless you immediately share a damp towel that has been exposed to the virus, then a slight possibility exists).
Swimming/bathing in open bodies of water like the sea and in chlorinated or soapy water (e.g., swimming pools, baths) is also not a transmission route for genital herpes, although I would personally most likely avoid it during an active outbreak, but that's just me!
HSV does not reside in the blood stream (only antibodies), so exposure to blood from cuts and wounds is not contagious. HSV carriers are also fine to donate blood, although it may be advisable to avoid this during a primary outbreak (recurrent outbreaks are okay).
The main thing is to avoid touching lesions, or if you do, to immediately wash your hands with soap and water before touching anything else, including other parts of your body to avoid autoinnoculation (especially during a primary outbreak and until enough antibodies have been established in your body, which is typically 3-6 months).
Herpes transmission- https://herpes.org.uk/frequently-asked-questions/passing-transmitting-herpes/
Donating blood - https://my.blood.co.uk/eligibility/health/article/?id=01707h25&title=Herpes-genital+%3A+Herpes+Simplex