indoor loose parts

[mushpea]

Im trying to build up some loose parts and natural play things for indoors and wonded if you folks could give me some ideas please or tell me what you have
so far i have
cardboard tubes/boxs
fir cones
small peices of material

what else could we use

[miffy]

keys
carpet tiles
screws and bolts
coasters
bottle tops
tins/lids
corks
sweet wrappers
sieves/funnels

Miffy xx

[Mouse]

natural sponge
loofah
pumince stone
wooden curtain rings
wooden bead bracelets
chunky metal chains
shells
smooth wood
wooden orange zester
boxes with lids
stones/pebbles
corks
wooden kitchen or bathroom "things" that I don't know what they're really for!

I'm just trying to think what we've got in out treasure basket & that's all I can remember without getting up & looking!