Review on 🐇 Natural Wooden Hay Feeder Rack for Rabbits, Guinea Pigs, Chinchillas, and Hamsters - Pet-Self Feeding Solution to Minimize Waste, Glue-Free and Nailless Design by Jamie Yurcaba

Watch out for reviews that say it had to be glued or modified to hold the pieces together. It won't stick unless you do so or are very gentle with it - you can't lay too much hay at once. The guy defeats the "no glue or nails" objective, and you'll refill him frequently. Assembly requires patience and finesse, the holes are a bit uneven in depth and width, and that's enough to not hold the pins as tightly as in the video.