LOL, a Sybil Variation...
Well, normally I would go on a rant about how it's actually more detrimental than helpful to simply ask for "the best" tricks - because what suits me almost certainly doesn't suit you, and it simply leads you to perform the same old thing. Which is all true.
I think though that in this case, you shouldn't be asking for ideas for effects exactly. What it sounds like you need is diversity of material. I can assure you that no laymen will ever say they're familiar with the TumbleGem Switch, or the Whiskers Split. Don't get me wrong - it's fine to have Ambitious Card Routines, and so on. In one sense, you may want to explore different ways to pull off your effects - try learning Derren Brown's Velvet Turnover for example, where the spectator can actually turn their card face down, but by the time they have done so, it is a double, and their card is now second from the top - this can be used instead of a double lift for those who know such things.
Essentially, that example was a branch off of my main point - it's fine to have ACRs, etc., but you still want to have some variety, some effects which are different, and use different types of moves rather than the most common ones. My recommendation would basically be to look through some books - find some books you think you'd like, look around for some reviews, or ask for some opinions here - and then buy a good magic book. There is no better way to find diversity of effects nowadays. Not only does this provide you with more information, it allows you to find rarer information, a greater arsenal of sleights and effects, and I think this would greatly allow you more freedom when performing for your friends.
This is not to say that you should never perform another double lift for these friends. Of course, you need to keep working on them - and some of the tricks you find, will of course require double lifts. But when you progress onto more diverse routines with more diverse sleights - it's the same as performing for magicians. Many will see many of your moves - but it's still possible to fool them. Just because every magician knows a double lift, doesn't mean you shouldn't ever perform a double lift, and just because every magician knows a double lift, doesn't mean they've never been fooled by a routine with a double lift in them.