It is very easy to make these small hideouts yourself.
You can make them in any way you like.Get yourself a coconut from the store.Now get out your drill with a hole saw and a hand saw.If your a little lazy you could use a dremel or angled grinder with saw blade to. Ofcourse if you do notintend to eat the insides.Me i kinda like coconut and my partner does not like a mess so i try to keep it a little clean.I first drill a few holes around the coconut with a holesaw iwht approx 3cm.After this i take out the saw and cut the coconut in 2 or 3 pieces depending on the size of hideout i want.Also saw straight through a few holes to give them an entrance leveled with bottom.They WILL ofcourse fnd other entrances as well.On the op i drill 1 or 2 holes of approx 5mm and stick in a bit of moss to make it grow onto the coconut outer shell. you can also bind the moss down with some thin fishing wire.Cutting it in 3 instead of 2 will decrease thesize of the hideout but you can add more in your tank.Once you cut or sawn the coconut in 2-3pieces push out the complete inside of the coconut in one time by puttingyour finger in the 3cm holes you made to loosen it and spoon it out if its a little stuck.Once this is done you can check if you would like to add more holesor not. if not you want to set it in water forabout a day and will se the water turn brown. repeat this process several times to avoid your water in your tank going brown.