In some games, the collecting of an item (say "a mouse" or whatever) on new screens can offer advantages - like more hints becoming available, or similar - whereas in others, collecting such items doesn't seem to have any particular purpose
[I tend to fail miserably in these circumstances anyway because half the time I never remember to look OR I can't remember later where I have or have not already
At the moment I'm playing "House 1000 Doors Family Secrets" and am already woefully behind with my collecting
Will I suffer dire consequences ??