As for the mortgage deduction, you are right, it just doesn't apply to much of the middle or lower-middle class at the moment. Either they got in when the prices were low, or interest rates were low, or both. So it can be hard to get over the standard deduction.
That said, just use a little trick. Pay your real estate taxes in January and December of the same year. That December, also prepay all the donations that you planned to donate the next year. Bingo: now you are well over the standard deduction for one year.
Suppose you pay $3k in mortgage interest a year, your real estate taxes are also $3k a year, your donations are $2.5k a year, and your sales taxes are $1k a year (your numbers that you mentioned). Then each year, you'd have $9500 (total for the two years is 2*$9500 = $19,000). That is low enough that you'd be taking the standard deduction of $12,600 (assuming you are married). Total deduction for the two years: 2*$12,600 = $25,200.
Now suppose you pay double the real estate taxes this year and none next year. Also suppose you double your donations this year and none next year. Now you will have $15,000 in deductions this year and $4000 next year (still the same $19,000 total). Itemize $15,000 this year, take the standard $12,600 next year. Total: $27,600. Difference: $2400 more deduction. If you are in the 25% tax bracket, that is a extra $600 in your pocket every other year.