Safe by Ugears is a great puzzle with interesting approach.
First of all, it is not as easy as it seems on the first glance — the assembly will take 4 to 7 hours depending on your experience with such puzzles.
The design is simple, but very sturdy, which is great for an actual safe. I have to admit I liked the giant “dollar” sign on the inside of the main lid — it looks great.
There is a lot of space inside the safe and it can be used to store valuables (jewelry, coins, diaries, candy, you name it).