Custom SVG Set for Courier Platform

Custom SVG illustrations and icons for a courier / parcel shipping website.

I run a Polish parcel shipping platform (customers compare couriers, buy a label and send parcels). I need a small set of ORIGINAL vector graphics in SVG format for the website.

What I need:
- 4 spot illustrations for the homepage: sending a parcel, courier pickup, parcel locker, parcel tracking
- 8 simple icons in one consistent style: parcel, envelope, pallet, tyre, label, calendar, wallet, return
- 1 illustration for a 404 error page

Style:
- Flat, clean, modern; limited colour palette (I will provide the colours)
- Must look good on light and dark backgrounds
- Consistent line weight and corner radius across the whole set

Technical requirements:
- Hand-made, clean SVG (no embedded PNG/JPG, no auto-traced path dumps)
- Optimised file size (SVGO), viewBox set, no fixed width/height
- Colours as simple fills so I can change them with CSS
- No text inside the graphics (or text converted to paths)
- Delivered as separate .svg files + source file (Figma / AI)

Important:
- 100% original work. No stock, no AI-generated images, no copying of other courier brands' graphics.
- Full commercial rights transferred to me.

Please send examples of SVG illustration/icon sets you have made before.