It's about three-and-a-half times as big as a Hot Tub.
In other words, 70 bushels is 3.43 times the size of a Hot Tub, and the size of a Hot Tub is 0.292 times that amount.(for Lifesmart Rock Solid Simplicity Plug and Play 4 Person Spa With 12 Jets) (a.k.a. Spa, a.k.a. Jacuzzi, a.k.a. Whirlpool) (Advertised Capacity)
It's about one-fifth as big as a Concrete Mixer Truck.
In other words, 70 bushels is 0.22 times the size of a Concrete Mixer Truck, and the size of a Concrete Mixer Truck is 4.5 times that amount.(a.k.a. cement mixer, a.k.a. cement mixer truck, a.k.a. cement transport truck, a.k.a. concrete mixer, a.k.a. concrete transport truck, a.k.a. in-transit mixer)(standard size; drum capacity)
It's about fifteen times as big as a Bathtub.
In other words, the size of a Bathtub is 0.067 times 70 bushels.(a.k.a. bath, a.k.a. tub) (for Bootz Industries Aloha 5 ft. Left Hand Drain Soaking Tub)
The capacity of a typical bathtub is 4.5 bushels. Historically, bathtubs have been made of various materials including marble, terracotta, silver, gold, and iron but the size and shape of the tubs has changed little in their 7,000 year history.
It's about thirty times as big as a Car Gas Tank.
In other words, 70 bushels is 32.6 times the size of a Car Gas Tank, and the size of a Car Gas Tank is 0.0307 times that amount.(for 2009 Ford Taurus)
It's about 40 times as big as a Beer Keg.
In other words, 70 bushels is 42 times the size of a Beer Keg, and the size of a Beer Keg is 0.0238 times that amount.(Half barrel; maximum capacity)
The most common keg size sold by US beer sellers is a half-barrel type with a volume of 1.67 bushels. This type of keg contains the equivalent of 165 0.0101 bushels cans of beer.
It's about 200 times as big as a Basketball (packed).
In other words, 70 bushels is 222.22159088 times the size of a Basketball (packed), and the size of a Basketball (packed) is 0.0045000127847 times that amount.(64% packing density) (NBA official ball standards, Size 7)
A NBA official ball, manufactured by Spalding, is a Size 7 ball measures about 0.20160057275 bushels. These balls have 4,118 pebbles each with a diameter of 2.5 mm
It's about 300 times as big as a Bowling Ball (packed).
In other words, 70 bushels is 299.6028257 times the size of a Bowling Ball (packed), and the size of a Bowling Ball (packed) is 0.0033377522314 times that amount.(64% packing density) (USBC specifications; tenpin)
According to United States Bowling Congress specifications, a tenpin bowling ball should measure at least 10.795 cm (4.25 in) in radius for a total volume of about 0.14953129996 bushels. Because regulation balls measure the same diameter irrespective of their weight, ball density varies by size and balls weighing less than about 5 kg (11 lbs) will float in water.