OPEN A DEDICATED SAVINGS ACCOUNT
If you really want to save for a vacation, create an account where there are small deposits made there that are strictly for vacation use. Save here and when on the trip withdraw from this account only, which helps you to stay on budget.
LIQUIDATE UNUSED ITEMS AND POUR INTO VACATION FUND
Sometimes we have lots of unused items laying around the house catching dust that can be sold on Ebay, craigslist or other sites. Do this and then use the funds to help with your vacation fund.
APPLY FOR A TRAVEL GRANT
If your travel happens to be for professional, educational or research purposes, you could try to qualify for a travel grant.