Instead of purchasing an expensive nest box for a pair of lovebirds, you can simply build your own using a variety of different materials, such as plastic, wood or cardboard. Cardboard nesting boxes, for example, are cost-effective and easy to make, and you can replace them as necessary without cleanup.
Choose a cardboard box to serve as the nesting box. The thicker the cardboard, the better this will be. For example, you may choose to use a commercial food box, or a larger box and cut it to size. If you choose a to cut down a larger box, use non-toxic tape to create a nesting box of the right size. The box needs to be large enough so that there is room for the male and female and their eggs.
Tape closed any openings or flaps in the box, using non-toxic tape. The box should be completely closed up at this point.
Decide where you want to place your lovebird nesting box. If there is ample space inside the cage, you can place it on the floor in a corner or against a wall. If there is not enough space, then you can place the nesting box outside of the cage.
Create an entryway into the nesting box by cutting a 75 mm (3 inch) round or square hole. Discard the cardboard that you remove.
Cut a small hole in the top of the nest box so that you can look inside as necessary. This will allow you to check on the lovebirds and their young while they are inside.
Punch holes in the nest box so that you can attach it to the cage in the desired location. The nest box should be secured tightly so that it will not fall from the weight of the birds inside. Tug on the box lightly to ensure that it is secured well.
Add nesting material inside the nest box. Possible choices for nesting material include shavings of wood, clean hay or shredded paper. Add nesting material inside the cage as well, so that the lovebirds can use and move it about as desired.