Hammocks for rats

Is it safe to buy hammocks and other rat cage enritchement/toys from Temu? If not do you have a good recepy for rat hammocks or other DIY enrichment I can make myself?

I have just spent alot of money on a good cage for my rats, I am not super ritch so I don't want to spend much more money. All of the pet stores near me are very expensive. I have already own bedding and stuff I can have on the ground, but nothing to climb on.

I am willing to make stuff myself, if it isn't too difficult.