Niagara Falls Fever Souvenir Tee NY. Niagara Falls Water Fever Souvenir Family Vacation Trip NY. "Niagara Falls Fever" flows strong with this souvenir for moms, dads, siblings, and cousins. Celebrate 4th of July or Labor Day with group photos and family memories ideal for anyone touring the waterfalls this summer. "Niagara Falls Fever" is your go-to souvenir with summer vibes for aunts, uncles, friends, and grandparents. Whether it's Labor Day or Independence Day, it’s a fun matching look for Falls trips and family adventures.