Maybe Davina picking the name from a hat on the plasma, and whoever she happens to choose is evicted!!!! lol

How about this...

BB recruits a set of IDENTICAL twins.

One twin is sent into the house with instructions that he/she isn't to tell the other housemates that he/she is a twin. The other twin is kept in luxurious isolation.

After a period of time, (24 hours?) the Twin in the house is called to the Diary Room where BB switches the Twins. (Obviously they'd be dressed the same...)

The new Twin goes into the house totally unaware of how he or she is getting on with the other Housemates, unaware of what they've been talking about, oblivious to conversations that they're supposed to have had...

Every 24 hours or so, re-switch the Twins.

If the Twins can keep up the deception for a week they go in the house together with a weeks immunity from eviction.

If the Housemates guess that it's Twins and not just one person then both Twins get evicted after hosting a very boozy party for their perceptive housemates...

Think about it..... (wink!)

I've thought it'd be good to tell the HMs that certain people are up for eviction, about 4, but really it's another 4.... so on eviction night, the 4 people who THINK they're up for eviction get ready properly, and the others not so much, but then it is revealed that somebody who the HMs didn't think was nominated are evicted. AND they have 5 minutes to say their goodbyes. They'd be realreal unprepared.

wot about on eviction night as soon as the hm has left bb then tells the hms mates that they have to nominate again straight away,they will all still be emotional about the eviction that maybe there thought process on who to nominate will be all over the place?

i think after a friday eviction bb shoud send in 2 identical twins. the twins will live in the house for one week and the following friday the house must choose one twin to stay and one twin to go.

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or

bb shoud send housemates into the task room where they will play ba blind date type game to choose a new hm.

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or

bb shoud make housemates nominate as normal but not reveal hoo iis up 4 nomination until friday, when davina calls out the name of the evicted hm.