What structures do many keepers utilize to create safe, expansive environments for large rabbits?
Answer
Puppy playpens or modular exercise pens.
Many keepers use puppy playpens or modular exercise pens to section off areas, creating safer and larger environments than pre-made pet store cages.

Related Questions
How does the housing requirement for a French Lop generally compare to that of smaller pet breeds?What minimum floor space does the House Rabbit Society recommend for a general rabbit?What floor space is often cited by experienced keepers as the practical minimum for a single French Lop?According to the provided comparison table, what is the minimum cage size suggested by The Spruce Pets for a single French Lop?Which source suggests the highest minimum floor space as the 'Indoor Ideal' for one French Lop?Why is a 16 square foot enclosure, which might translate to 4ft x 4ft, considered restrictive for long-term housing?What spatial configuration is mentioned as a potential housing area for a pair of French Lops?What critical physical consideration, besides flat floor area, must be factored into a French Lop's enclosure configuration?What structures do many keepers utilize to create safe, expansive environments for large rabbits?If a French Lop has several hours of supervised free-roam time daily, what range is acceptable for its dedicated home base enclosure?