I don't...
I keep a list of all the things I've backed and a running total of how much I've spent on them over the years, so when something arrives, I knock the total off the outstanding and feel less guilty about the whole thing :)
Sometimes, just sometimes, a motherload lands, so imagine my cheerfulness this week when Lord of the Dead arrived earlier, and this morning...
Only Feng Shui 2 and Exploding Kittens...
Full review to follow, but I'll leave you with this...
Exploding Kittens box Opening...