If you're not sure what to buy as a gift then give them a gift certificate.
Dive-Logs Gift Certificates make great gifts if you are not sure what to get as a present! Give the choice along with the gift - particularly for personalised items such as Log Book Stamps and Scuba Tags!
info and products...
Excellent products, excellent website and ordering system, and I'll be back for some log book inserts as soon as I've finished my current dive log (which should be in a few weeks!).