Yeah!
In the good ole days (last year) you could use your smaller gift cards to buy a larger one on the
WalMart site. They stopped allowing this though.
Like
@travelbug, I've also used multiple WalMart gift cards at Sam's Club to buy Disney.
But I do other rewards programs besides Swagbucks (mPlus Places, Ibotta, My Coke Rewards, etc...) and having a bunch of $5, $10 and $25 cards was a hassle, so I now go ahead and combine the small ones at WalMart Customer Service. They will put them on a regular WalMart gift card that can also be used at Sam's Club.