Like a few others here, I do make a spreadsheet of my gift cards. I keep all my transfered gc in a plastic baggie by my computer area and bring a few extra blanks on our trips. On my spreadsheet i include the card #, PIN, its value, what it cost me, % off, what card I transfered it to, what deposits I've paid on what card, and finally notes on what sort of entitlement I should expect from it (like 8% Dosh credit, RMN $5 off, etc). I try to keep a formula on the % off column so at any given day I can see what my average % off is. It makes me feel better knowing that I am saving even more than the discounted rooms are showing (by paying with my discounted dgc) and is also helping me decide on a future trip whether or not I should purchase my kids' WDW tickets through
UT or directly from disney. I would have to have a higher average discounted rate on my disney gift cards to rationalize buying them through disney because UT prices already include tax (something I did not realize at first)!