What can I make a nest out of

[Webbles]

I need something cheap cheap and easy

[antnest8]

1# choice -- test tubes
colonies can live in one or several test tubes for a year or two.

other options
1. plaster
2. grout
3. dirt
4. bead containers (Look It Up)
5. ytong
6. wood (only temprary

[Adam09]

I created a cheap nest with plastic cup and plaster like this: https://drive.google.com/file/d/1DMeoc2-FbM2pAjWD7P19bSDCENBtPyicIg/view?usp=sharing
I poured the plaster in the cup, i let it to dry, then I carved out as you can see on the picture. I also put small plastic cup and plate on the top of the plaster, one will be for water to drink, the other for food. Like this I will be able to clean the pastic.

I found similar nests on the internet, but I don't know yet if it is will be OK in long term.