Tzaziki is really easy - cucumber (I seed, peel and grate the long telegraph ones, then squeeze as much of the liquid out as I can, it is more traditional to have grated cucumber but you could also chop it finely), very finely chopped or minced garlic, greek yoghurt and salt. I also add a tiny bit of sugar if I've overdone the garlic, it balances it. Tastes best when it's a day old, the garlic mellows.

Hummous doesn't really taste of chickpeas, it's more the base, iykwim. Tastes better if you buy dried chickpeas and soak them, they have a nuttier flavour. Pureed chickpeas, lemon, cumin, garlic and tahini. Yum.

Baba ghanoush is char-grilled eggplant dip, is really yummy too. Can't think of a recipe off the top of my head. Beetroot dip is another good one.

What about a salsa type dip - chopped tomatoes, spanish onion or spring onion, chopped chilli and lime or lemon juice, maybe a bit of chopped coriander? Or if you have lots of tomatoes or a herb garden with lots of basil, flat bread bruchetta is really easy, toast it, rub with a garlic clove, then top with chopped tomatoes, basil and spanish onion (if you like, I prefer it without onion)

HTH!