Baby teething rings to launch around, the hard plastic ones, not the soft watery ones
I got some good, cheap ones off eBay
I bought a pack of 8 so made two 4 link long ones for them.
Toilet rolls stuffed with hay.
Plastic plant pots to throw around (make sure they aren't eating them though!)
I get brown paper bags and stuff them with hay, they love that.
Mine have 32L storage boxes for litter trays, so when I clean them out every day I sprinkle a bit of forage (dried dandelion leaves etc) onto the hay and they go crazy for it
improves their hay eating too as they munch on more while trying to find bits :thumb:
Cat tunnels and boxes with both ends cut out so it makes a tunnel.
One of my indoor buns has a dog bed filled with blankets and towels which he digs in