Seeking workable multi-purpose items works to minimize weight. although this can be driven to extremes.

I like strap buckles that incorporate a whistle.  Typically these are located on pack sternum straps where they are nice and handy.  Dad Aint Hip mentioned trowels for digging cat holes.  There is almost some item which will do the job - boot heel, handy stick, trekking pole, etc., saving money and weight.

I often go with a small tarp and biy sack, rather than a tent, saving a lot of weight....