For solid state pins you want 1-1/4" slow-blow fuses. When I was looking for fuses two years ago, most people steered me towards Pinball Life because the sell quality name branded Bussman fuses, and at that time Marco's and Pinball resource were selling cheap Chinese fuses for around the same price.

Pinball Life's fuse page:
https://www.pinballlife.com/search.html?Search=fuses

You can order a kit with a variety of fuses from Pinball Life:
https://www.pinballlife.com/slo-blow-fuse-kit.html

You can buy individual fuses here:
https://www.pinballlife.com/1-14-slow-blow-fuses.html

Pinball Life didn't have the kit available when I ordered at that time, so I ordered the individual fuses in increments of five. If you ordered in increments of five, they ship in the small metal tins displayed. I then bought ten each of 15a and 20a fuses from Pinball Resource. If you don't order the Pinball Life kit, make sure to order a fuse puller.

I like LTG suggestion to go through your manuals to determine which fuses you'll need. Fuses are cheap so I suggest ordering ten of each. Buy a plastic storage case with changeable rows to insert the tins. Another option is to buy a plastic storage case with fixed small compartments. Using a label maker, print a sticker for 3A SB. Place it on the bottom of one of the compartments. Load the fuses. Now when you're making a list to reorder parts, you can quickly inventory what fuses you need to order.