If you're hot, they're hot! Give the small animals in and around your household the opportunity to cool down a bit.
All you need is:
- a bottle (with the standard european bottle cap thread, no idea if these vary much worldwide)
- Filament that can withstand some of those elements flying around out there (I use PLA with a higher heat resistance)
- Water (tap is fine, sparkling if your cat is a bit extra)