Measuring, cutting, and lining drawers is one of my least favorite tasks. Here are some tips I've learned after four houses' worth of lining:
--Never go to Walmart (worse yet, the grocery) to buy shelf paper. It's a huge profit maker for a traditional store. Big Lots usually has closeout rolls for up to half the cost.
--Dry applications can use leftover wallpaper cut and folded to size. I pick up pretty rolls when I see them at yard sales for 25 cents.
--Unusual size cabinet shelves are easiest to line with vinyl tablecloths, cut to size with pinking shears. A big piece of vinyl eliminates overlapping and bunching later. A few matching vinyl tablecloths bought on clearance give you far more yardage than several rolls of paper. You can use your staple gun or tacks to secure the corners if needed.
--The cheapest option for underused shelves is to paint them in a high gloss finish.