How do you affix decor, shelving, etc. to vinyl siding?

If you don't want to put holes in the siding, what about Command Hooks?

you can buy vinyl siding clips at a local hardware store or on line I found several fastener types available and work well

I'm with Molly for no holes. But depending on what you want to attach and it's weight, always consider locating wall studs for anchoring. Best of luck.

There are actuall siding hooks for putting decoration on the siding. Used them for a thermometer.

there are clips at the hardware just for hanging decoration on siding- they actually fit between the lengths of the siding I use them and they work

Command hooks don't work really well for heavy items on siding because the contour/angle of each plank of siding leaves the hook at a weird angle.

Thank you. Will ask @ Home Depot the next time I go.

Thank you all for your responses. I have tried command strips but due to dampness (I live in the northeast) they don't last too long. I definitely do not want to drill holes so I will try those clips made for vinyl siding (I wasn't aware they even existed). I will just have to keep my decor on the light side.