If this has been discussed already let me know, but I don't think it has.

I have read many threads on Citibank's thankyou reward system and different cards that are linked to it. I was wondering if people have any ideas on how to best use their points to get more value per point. So far it seems the best value is student loan rebate for students, and gift cards for purchases you were already going to buy. I was also thinking you might be able to get more value from your points by selling airplane tickets you redeem for a higher value, like during peak seasons since there are no black out dates. Currently Citi doesn't charge any additional fees for these tickets. What are your thoughts or strategies that you use?

probably gas card or HomeDepot since I know I will spend some $ there eventually.

Gas Cards.... You always need gas...

One way or round trip? from where? just to get a feel....

25,000 pts earns you a free roundtrip to anywhere in the continental united states.

Tickets have different price brackets depending on what regions of the world. Continental US is 25000 points per round trip ticket. You can go from any major US airport to another major US airport and back, no black out dates. Currently Citi is also covering taxes and fees.

True, there are no blackout dates, but note that the new description for flight ticket redemption reads 'starting at xxxx points', and sometimes you need more than, say, 25k TY points for a domestic rount trip, or 60k for one to Asia. I suspect it happens when the ticket price they can find is over a certain limit, which is not disclosed. That said, flight ticket redemption works fairly well these days after Citi dumped Global Impact and started to use Expedia as their 'travel department'. They make effort to accommodate your request regarding specific travel times/airlines, etc. I would also encourage you to read others' experiences and report yours here.
I think flight ticket redemption is the only way to reach a cash value greater than 1 cent/pt.

They haven't been available since early January.

IMO the best way is to redeem for student loan rebate - they'll send you a check payable to you and your loan company. You mail the check to the loan company.

Next best way is to redeem for non dealpas gift card (dealpass giftcards can be bought for 20% off face value).
Gas gift cards are ok, but keep in mind that you lose 5% which you would earn by buying the gas with CC.

As foto said, stay away from the Gas cards because then you're just losing that 5% back. Insted use it on something you wouldn't get Cash Back on or only get 1% back. I usually just get the GCs I know I'm going to use, although the student loan idea isn't too bad. I always figured it was mainly for people with Citi financed student loans. Foto, so they send you a check and you just sign it and forward it to your loan provider?