Pay a visit at the Brooke Hospital for Animals - and leave a donation!
Visit ACE - Animal Care Egypt - it has new premises, and operates free for Egyptians. Donations are always accepted - but consider buying their clothing range or books, as a charity, they totally rely on such things.
Pay a repeat visit to Luxor Temple at night - atmospherically lit, it has a completely different mood to that found in the daytime and is usually more intimate then with fewer visitors.
Watch the sun go down over the Nile: preferably from the terrace of the Old Winter Palace hotel, with a drink in your hand. Listen to cacophony from thousands of small birds that roost in the trees lining the Corniche.