I need ethical help !!

I am not 100% certain, but I think that the OP could do as you suggested & send an e-mail telling them the situation, & if they do not arrange to pick up the goods in a certain length of time, then you are sell them or bin them. keep a copy of the e-mail & make the time scale reasonable, say 3 weeks. It's no hardship storing 5 lens hoods for that time. You could even tell them you will charge for storage if they don't collect.

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lee uk.
There are old pilots, & there are bold pilots, but there are no old bold pilots.