Do you mean easy as in "easier to perform" or "easier to make use of because you don't have a pull up bar?"
You can snag pull up bars for around $20 just about anywhere, now.
If it's the exercise itself, here are a couple of ways to get bodyweight rows in...
- you can make/purchase suspension trainers for $9-40, which also has the advantage of being easier or harder based on your angle with the suspension straps.
- stick + two ends. Any sturdy stick (broomstick, steel pipe, bo staff, whatever you have around) with something to put it across (chairs, counter tops, etc). You don't get as much variation with your angles (like with suspension straps)
- the end of a table. admittedly, I don't like this option. It feels really really awkward, and I don't like it. I also have a circular table. If you have a table that would suffice, then go for it.
If you are outside, there are tree branches, playgrounds, and some parks have fitness trails that have pull up bars of varying heights.
Hope it helps. Good luck!