WHere can I get this

[Onyx]

I've been looking all over to find these blue thingies. I got these from one of the old playpens but will like to get more of just these to make some bin cages. Anyone have ideas?

[souffle]

It looks like a FOP connecter. They are not that easy to come by as I don't think they make them anymore. Try looking for FOP cages and see what comes up.
This used to be the way they connected tubes but their designs seem to have changed of late.
http://www.fop.it/site.asp?*p=92&fClasse=999999
It isn't exactly the same as FOP which look like this actually but similar:
http://www.animalfarmacy.co.uk/products/detail/4391/fop-plastic-cage-attachment-for-tube

[Onyx]

it looks like a fop connecter. They are not that easy to come by as i don't think they make them anymore. Try looking for fop cages and see what comes up.
This used to be the way they connected tubes but their designs seem to have changed of late.
FOP Articoli per animali - Prodotti: Nuovi Arrivi (http://www.fop.it/site.asp?*p=92&fclasse=999999)
it isn't exactly the same as fop which look like this actually but similar:
Fop Plastic Cage Attachment For Tube - 4391 -Animal Farmacy (http://www.animalfarmacy.co.uk/products/detail/4391/fop-plastic-cage-attachment-for-tube)

thank you!!!!